Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • A disc rotating about its axis with angular speed omega_ o is placed lightly without any translational push on a perfectly frictionless table. The radius of the disc is R.

Q7.28  A disc rotating about its axis with angular speed \omega _{0} is placed lightly (without any translational push) on a perfectly frictionless table. The radius of the disc is R . What are the linear velocities of the points  A, B and C on the disc shown in Fig. 7.41? Will the disc roll in the direction indicated?

 

Answers (1)

best_answer

Let the angular speed of the disc be  \omega.

So the linear velocity can be written as    v\ =\ \omega r

(a)  Point A:-  

                               The magnitude of linear velocity is \omega r and it is tangentially rightward.

(b)  Point B:-  

                                The magnitude linear velocity is \omega r and its direction is tangentially leftward.

 (c) Point C:-  

                                The magnitude linear velocity is   \frac{ \omega r}{2}  and its direction is rightward.

 

The disc cannot roll as the table is frictionless.

Posted by

Devendra Khairwa

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 12 English Exam Analysis 2025: Paper rated 'easy, straightforward'; section-wise difficulty level
anam-khan

CBSE 12th Board Exam Live: CBSE Class 12 English paper 'easy and balanced'; answer key updates
anam-khan

CBSE Class 12 Maths paper 2025 'moderate but lengthy', questions from PYQ, NCERT

Latest Question