## Reminder:Feedback for Engineering Mechanics:Statics and Dynamics

Dear student

We are glad that you have attended the NPTEL online certification course.

We hope you found the NPTEL Online course useful and have started using NPTEL extensively.

In this regard, we would like to have a feedback from you regarding our course and whether there are any improvements, you would like to suggest.

We are enclosing an online feedback form and would request you to spare some of your valuable time to input your observations. Your esteemed input will help us in serving you better.

https://goo.gl/kDbqhy

We thank you for your valuable time and feedback.

Thanks & Regards,
NPTEL Team

## Final words and Final exam pattern

Hello all,

As the course is almost coming to an end and the final exam is only a few days away, I would like to summarise everything we’ve learnt from this course. In the first week we discussed the Newton’s laws of motion, the concept of equilibrium and applied them to rigid body systems. In the second week, we discussed structures and the forces in structural members. In the third week, we introduced the idea of bending moment and shear force distributions. In the fourth week, we learnt about friction and its applications to various engineering systems. In the fifth week, we moved on to kinematics of particles as well as rigid body systems. Then, in the sixth week, we introduced the concepts of dynamics and applied them to various rigid body systems. In the seventh week, we learnt the impulse-momentum approach of solving rigid body dynamics problems. Finally, in the eighth week, we looked at a different way of solving dynamics problems i.e., work energy approach.

You will find that these concepts can be extended to studying more complex engineering systems in the advanced courses in mechanical engineering like Kinematics and dynamics of machinary, Strength of materials, Design of machine members etc.

Regarding the final examination, we will be conducting the exam for 100 marks which will amount to 75% of your total score. The assignments you have attempted will contribute 25% to your total score. Best SIX assignment scores of the total TEN assignments will be considered for the final scores. The final exam will have 3 sections. The first one will contain 17 Multiple Choice questions (MCQ) each for 1 mark. These questions will test your conceptual knowledge. The second section will contain 21 questions each for 3 marks. These are either MCQ or numerical answer type questions. The questions will be similar in standard to the questions asked in the assignments. The third section will contain 5 questions each for 4 marks. The questions in this section are all MCQ type questions. These questions will also be based of the assignment questions.

Since assignment questions carry a lot of weightage in the examination, I would strongly urge you to go through all the assignments and check out the solutions which have been uploaded. Go through the course material including videos and notes if you need clarity on any concept. Please feel free to make use of the forum to clarify any doubts of yours. We will try to answer them as soon as possible.

It has been a delight to have you onboard this exciting journey through Engineering Mechanics. Hope you enjoyed it as much as we did.

Best wishes and good luck,

Prof. Mahesh Panchagnula and the TA team

## Queries regarding assignment marks

Hello everyone.

There have been a lot of queries regarding assignment marks posted on the forum. To clear things, We will be considering only the best 6 assignment scores out of all the assignments you have attempted. There were a few errors in assignment 2 which are currently being rectified by the technical team. These corrections will be done in a couple of days. Please don't worry about your assignment 2 scores in the meanwhile. Also assignment 5 had a problem that many of you had included the units in the answers.

Considering all these and also requests from people who've missed the deadlines of a few assignments, we have put up 2 additional assignments. Those of you who have missed assignments or have performed badly in any assignments can use this opportunity to improve your score. So, we will now be considering the best 6 scores out of all the 10 assignments.

Best wishes and Good luck!

## Announcement regarding Assignments

Hello everyone,

Hope you are enjoying the course! This announcement has some important details regarding assignments. Solutions to assignment 7 have been uploaded. You can download it from the solutions tab. Some of the questions in Assignment 8 have been changed. For those who have attempted it already, Please take up the quiz again. Apart from the 8 assignments, we have uploaded two more assignments - 9 and 10. Only best 6 out of 10 assignment scores will be considered for final grading. Due date for assignment 8,9,10 will be the Wednesday of next week. Please allot yourselves some extra time to attempt these assignments.

Best wishes and Good luck!

## Hall ticket for March 26th NPTEL Online Certification exams is now available for download.

Dear Candidate:

If you have registered for the March 26th  NPTEL Online certification exam, your Admit Card/ Hall ticket is now available inside your application form:

Login with your registered Google-enabled account email id (used to access the course on the portal and used for registering for the exam) and its password to access the link and click on March exams to download the hall ticket(s) for the March 26th exams, from the link.

Note: that you will be able to login here, only if you have a valid registration for exams on March 26th 2017.

Please download hall ticket, take a print out and along with a original ID card, carry it with you to the venue (The exam centre address is there in the hall ticket). Read all instructions given in the admit card/ hall ticket carefully and follow them.

Note1:- If you are writing 2 exams – Forenoon and Afternoon sessions, please ensure that you have downloaded 2 hall tickets which will be hosted inside the login.

In case of the any problems with the hall ticket kindly write to us nptel@iitm.ac.in

IMPORTANT:

1. Change of shift, course, exam center, exam city will not be encouraged.
2. You will not be allowed to write the exam if you are showing up in the exam center which is not allocated to you by mistake or by intention.
3. Entry beyond 09:30 AM in FN and 2:30 PM in AN will not be entertained.
4. Candidates will not be allowed to write the exam without Hall ticket and proper id proof.

NPTEL Team wishes you the very best for the certification exam.

Thanks & Regards,
NPTEL team

## Week 7 content available!

Hello everyone,

Hope you are enjoying the lectures and assignments. We are entering week 7,the penultimate week of this course. This week we introduce the concept of Impulse and momentum which can be used to solve a larger class of engineering problems involving particle-particle / rigid body - rigid body interactions. We also look at a special point called the center of percussion and it's importance. Please go through all the lectures before attempting the assignment. We strongly recommend you to use the forum for any technical and course related queries.

Best wishes and Good luck!

## Announcement

We have been receiving lots of queries regarding the grading for assignment 5. The reason behind a lot of people scoring less than expected is because of a small technical glitch in the back-end (the automatic grading system was not designed to recognize units). Sorry for any inconvenience caused. We are working on this issue and will update the scores as soon as possible. Assignment for week 6 is now available. Please watch all the lectures in week 6 before attempting the assignment.

## Week 5 content is now available

Hello Everyone,

We are now entering one the most important aspects of mechanics i.e., Dynamics. In the following modules, we will be looking at particle systems, rigid bodies and rigid body systems. We will introduce concepts of kinematics and dynamics using simple examples. These concepts can be extended to complex systems as well. This week will be dealing with kinematics of particle systems. This will help understand concepts in kinematics like relative motion, rotation etc. Please go through the lectures and try the examples discussed in lectures by yourself. Assignment 5 is also uploaded, please try out the assignment once you are done with the lectures. Also assignment can be submitted any number of times. Only the last submission will be considered for grading. Please take the assignments seriously, they weigh 25% in your final score. Anyway only best 6 out of 8 assignment scores will be taken for this.

The deadline for Assignment 4 is 21-2-17 i.e., Tuesday 23:59 PM. Please make sure you submit your assignment 4 by then.

Also, In the "Computational Examples" section, we will be uploading very interesting examples which are solved using MATLAB. We are trying this kind of thing for the first time. It is not compulsory for anyone to follow it. It is just to motivate people to start appreciating complicated problems which demand the use of computers to solve them. Please look at the examples we uploaded. If you want to look at the MATLAB codes we have written, please follow the instructions in the "Computational Examples" section and create MATLAB Online account and await further instructions for accessing the codes we have written. Even if you have no experience or interest in programming, please go through the examples uploaded, they are pretty interesting.

Best wishes and Good luck!

## Last 1 week for Exam Registartion - Hurry up!!!

Dear student

The certification exam will be conducted at designated centres in the city chosen by you. You have to register for the exam by filling up the form, paying the exam fee and appear in person to get the certificate.

Register for the exam today at: http://nptelonlinecourses.iitm.ac.in/

Exam registration form closes on 22 February 2017 at 10:00am.

Type of exam: Online

Online:

You will have to appear at the allotted exam centre and produce your Hall ticket and Government Identification Card(Example: Driving License,Passport, PAN card, Voter ID, Aadhaar-ID with your Name, date of birth, photograph and signature) for verification and take the exam in person. You can find the exam allotted exam center details in the hall ticket.

The questions will be on the computer and the answers will have to be entered on the computer; type of questions may include multiple choice questions, fill in the blanks, essay type answers, etc

The hall ticket will be available for download tentatively around 15th March 2017.

FINAL CERTIFICATE:

The final score = 25% assignment score + 75% final certification exam score.

The final score will determine if you will/will not receive a certificate.

1. Final score < 40%: NO certificate
2. Final score between 40% -59%: Certificate of type "Successfully completing the course"
3. Final score between 60% -89%: Certificate with tag "Elite" printed at the top
4. Final score of 90% and above: Certificate with "Elite" tag and the gold medal printed on it.

The sample format is attached here for your reference:

Photos of Toppers in every course are published on the website http://nptel.ac.in/noc along with the name of the college/organization you belong to.

Best of luck for the exams.

- NPTEL team

## WEEK-3 COURSE CONTENTS AVAILABLE

Hello everyone!

The course contents for week-3 on beams are now available. Also, the assignment for week-2 closes by tonight. The solutions for which will be put up by tomorrow morning.

Good luck!

## Reminder 1: REGISTER TODAY - CERTIFICATION EXAM FORM IS NOW OPEN!

Dear Student:

Here is the much-awaited announcement on registering for the March 2017 certification exam. The registration for the certification exam is only open to students who have enrolled in the course.

Registration is open from 2nd FEBRUARY 2017 (Thursday) until 22nd FEBRUARY 2017 10:00 AM (Wednesday).

The certification exam registration URL is: http://nptelonlinecourses.iitm.ac.in/

(If you want to register for the exam for this course, login here using the same email id used to enroll to the course)

Dates of exam: 26th March 2017(Sunday)
[Forenoon-Shift 1/Afternoon Shift 2] (You can choose any one shift according to your convenience for writing the exam). You can register for a maximum of 2 course exams (same day of exam – 2 sessions. Same exam city will be allocated for both the sessions) through this form.

Exam Session time: Shift 1 - 9.00AM -12.00PM ; Shift 2 - 2.00PM - 5.00PM
Examination Cities: The exam is to be conducted in several cities across India whose list is available on the registration form.

Registration fees: Rs 1000/-
(Students belonging to the SC/ST category can avail a 50% fee waiver - please select Yes for the SC/ST option and upload the correct Community certificate)

Mode of payment:  Online payment - debit card/credit card/net banking.

HALL TICKET:

The hall ticket will be available for download tentatively between 12 -16th March 2017. We will confirm the same through an announcement once it is published.

Final score on certificate:
25% of assignment score + 75% of certification exam score.
Award of certificate:  Hard and soft copy of Certificate will be awarded only to those candidates who register for the exam, attend the certificate examination and whose Final score > 40%

The final score, assignment score and exam score will be printed on the certificate. The certificate will also have a link to the NPTEL website (
http://nptel.ac.in/noc), where on logging in, your scores and e-certificate will be available for verification  (Appropriate announcements will be made). Please do regularly submit assignments to get a good final score.

IMPORTANT NOTES

1) FOR CANDIDATES WHO WOULD LIKE TO WRITE MORE THAN 1 COURSE EXAM:- Once the registration form is submitted after payment, no changes like adding or removing the chosen course, exam shift, city is possible. So, if you are choosing to write 2 course exams, please choose suitably and
make the payment for both courses at the same time. It is not possible to pay later for the second course. Once the payment is made, the registration form will be non-editable.

2) FOR CANDIDATES WHO HAVE GOT SCHOLARSHIP VIA YOUR LOCAL CHAPTER: -
Students who have got scholarship via NPTEL local chapter can opt to pay individually using the above form. While doing so, the reduced fee will automatically apply.

3) FOR CANDIDATES WHO ARE PAYING VIA THE LOCAL CHAPTER OF YOUR COLLEGE:-
There are 2 modes of operation:

Option 1

1. You will pay fees to your SPOC.

2. Your SPOC will pay the fees to NPTEL on your behalf and also will provide us all details including photo, signature.

3. We will populate all the fields in the exam form.

4. Your responsibility will be to come to the exam form and verify that the details in the exam form are correct.

Option 2

1. In the exam form, you will fill all the details and also upload photo, signature.

2. Ensure that you had selected your college name correctly from the drop-down list in the form.

3. Payment of exam fees - click on the tab - 'PAY VIA SPOC'.

The SPOC has to now confirm to NPTEL that he/she will pay fees on your behalf.

If the SPOC says NO, you will be intimated via email.

Then it becomes your responsibility to come back to the exam form and make the payment.

If you do not pay the exam fees within the prescribed time, you will not be able to write the exam.

After submitting the form, in case you wish to change the name, date of birth, address, photo and signature Please login to http://nptelonlinecourses.iitm.ac.in/edit_details.php and make the changes till February 22, 2017.

The following data initially submitted cannot be changed –email id, course selected, shift, exam city, SC/ST. For changes in this email us at nptel@iitm.ac.in giving your Application number, email id and name. No changes will be entertained in these details after February 22 2017.

Thanks & Regards,

NPTEL TEAM

## Week 2 Assignment

Hello everyone!

Hope you are watching the week 2 lectures. Assignment 2 is now available online. Deadline for the assignment 2 is 6th February 2017, 11:59 PM. Please make sure you have watched the lecture videos before attempting the assignment. The assignment can be attempted any number of times before the deadline, only the last attempt will be considered for grading. The solutions of assignment 1 are now available in the section named Assignment Solutions. Also, notes for a few important concepts in week 2 have been uploaded under the week 2 content, please have a look at them.

## Teaching Assistance for the course

Hello all,

My name is Mahesh Panchagnula. I am course instructor, as you can see. Prof. Sivakumar and I will be teaching this video course on Engg. Mechanics - Statics and Dynamics. I will be helped by Mr. Srikanth Sarma and Mr. Sharan Raja as the Teaching Assistants for this course. They are both undergraduate students at IIT Madras and have taken this as well as other advanced courses in Mechanical Engg.

Please feel free to post your questions on the forum. They will try to answer them as soon as possible (usually within 24 hrs.) I will also be contributing to the forum from time to time. Please keep an eye on the forum.

The forum is not only intended for interactions with us here at IIT. Please use it for interaction among yourselves also. If you feel you can answer a fellow student's question, please do so. If something requires modification, we will step in and correct.

We look forward to many weeks of productive online time spent together.

Best wishes and good luck,
Mahesh

## Week 1 Assignment

Hello everyone!

Hope you are watching the lectures for week1. The assignment for week 1 is now available. Due date for which is 30 Jan 2017 at 23:55. You can submit the assignment any number of times you want. The final submission will be considered for grading. Solutions and grades for the assignment will be available after the due date.

## Welcome to Engineering Mechanics!

Course content for week1 is now available!

This week's lecture introduces Newton's laws of motion and the concept of a rigid body upon which the entire course will be built. You are strongly encouraged to take the demo assignment to get used to the portal. The actual assignment for week1 will be available on Monday at 8:00 a.m. Please feel free to use the forum in case of any queries.

Happy learning!

## Dear Student

Welcome to NPTEL Online Courses and Certification!

Thank you for signing up for our online course "Engineering Mechanics:Statics and Dynamics". We wish you an enjoyable and informative learning experience.

The course will begin on January 23, 2017. When content is released on the portal, you will get an email alerting you. Please watch the lectures, follow the course regularly and submit all assessments and assignments before the due date. Your regular participation is vital for learning.

We will open registration for the exam soon after the course starts. A form has to be filled and the certification exam has a fee, which needs to be paid at the time of registration. Everyone who has signed-up for the course, including those who do not register for the exam, will continue to have access to the course contents.

There are two sections on the portal apart from the course content and assignment sections:

•    The announcement list which will only have messages from course instructors and teaching assistants - regarding the lessons, assignments, exam registration, hall tickets etc.
•    The discussion forum which is for everyone to ask questions and interact - If you have any questions regarding the technical content in the lectures, any doubts in the assignments or any question related to the exam, registration, hall           tickets, results, etc, kindly write about this in the forum and the course instructor/TA will respond to it. Please use this well and participate to benefit from the course.

Details regarding the course:

• Name of the course: Engineering Mechanics:Statics and Dynamics
• Course duration : 08 weeks
• Dates of exams : 26 March 2017
• Time of exam : Shift 1: 9am-12 noon; Shift 2: 2pm-5pm
• Any one shift can be chosen to write the exam for a course.
• Final List of exam cities will be available in exam registration form.
• Exam registration url - Will be announced shortly

Once again, thank you for your interest in our online courses and certification. Happy learning - NPTEL team.