Get Answers to all your Questions

header-bg qa

Q7.29     Explain why friction is necessary to make the disc in Fig. 7.41 roll in the direction indicated.

               (b) What is the force of friction after perfect rolling begins?

Answers (1)

best_answer

Perfect rolling will occur when the velocity of the bottom point (B) will be zero. Thus the frictional force acting will be zero.

Posted by

Devendra Khairwa

View full answer

Crack CUET with india's "Best Teachers"

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