CSIR NET
   Top Resources
profile-img
Debanjana Adhikari posted an Question
May 24, 2020 • 16:15 pm 30 points
  • CSIR NET
  • Physical Sciences

what is cofficient of restitution??

A ball of mass m , initially at rest, is dropped from a height of 5 meters. If the coefficient of restitution is 0.9, the speed of the ball just before it hits the floor the second time is approximately (take g =9.8 m/s* ) (a) 9.80 m/s (b)9.10 m/s (c)8.91 m/s (d)7.02 m/s

1 Answer(s) Answer Now
  • 0 Likes
  • 4 Comments
  • 0 Shares
  • comment-profile-img>
    Chandra prakash

    dear see full concept of cofficiant of reatrication and solution of prob....

    cropped2065528205.jpg
    cropped-1778109384.jpg
    eduncle-logo-app

    it's very helpful for you dear

  • comment-profile-img>
    Ruby negi best-answer

    8.91is the correct ans.. option c...

    cropped-1672020986.jpg
    eduncle-logo-app

    for any doubt, you must ask...

    eduncle-logo-app

    try to do it by urself as this is the basic ques..

    eduncle-logo-app

    only remember the formula of coefficient of restitution...

  • comment-profile-img>
    Abhishek singh

    I defined coefficient of restitution first. It's definately is the ration of two velocities as shown in diagram below. its value is equal to 1 for elastic collision. and for inelastic collision it's value varies from 0 to 0.999 , its value is 0 for perfectly inelastic collision.

    cropped4070812831294930566.jpg
    eduncle-logo-app

    this theory along with stepwise explanation will help you build concept.

    eduncle-logo-app

    you may ask further duobts if you got stuck anywhere.

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers

Sign Up to Download FREE Study Material Worth Rs. 500/-