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Systems of Particles and Rotational Motion — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsSystems of Particles and Rotational Motion1 Mark
Question
Read statement below carefully, and state, with reasons, if it is true or false:
During rolling, the force of friction acts in the same direction as the direction of motion of the CM of the body.
✓

Answer

False.
Explanation:
Frictional force acts opposite to the direction of motion of the centre of mass of a body. In the case of rolling, the direction of motion of the centre of mass is backward. Hence, frictional force acts in the forward direction.

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