Q. A man pushes a cylindrical drum through a board of length as shown in figure-5.109. The drum rolls forward on the ground a distance of . There is no slipping at any instant. During the process of pushing the board the distance moved by the man on the ground is :

System of Particles and Rotational Motion Report Error

A

B

C

D

Solution:

Let speed of of cylindrical drum is , then time taken by it to cover a distance of

Speed of plank
[due to pure rolling of drum]
Distance travelled by plank is

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