Physics, asked by PerinKrishna9250, 9 months ago

Explain why friction is necessary to make the disc in Fig. 7.41 roll in the direction indicated. (a) Give the direction of frictional force at B, and the sense of frictional torque, before perfect rolling begins. (b) What is the force of friction after perfect rolling begins?

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Answered by Ayeshah10

1

the question is too long to understand

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