A solid sphere rolling without slipping on a horizontal rough sur… - Vidyadip

MCQ

A solid sphere rolling without slipping on a horizontal rough surface and starts rising on inclined rough surface as shown in the figure assume pure rolling throughout the motion. Choose the $INCORRECT$ statement

A
friction force is zero when moving on horizontal surface
B
direction of friction force is upward when moving upward on inclined plane
C
direction of friction force is upward when moving downward on inclined plane
✓
friction force is always opposite to the motion of the sphere.

✓

Answer

Correct option: D.

friction force is always opposite to the motion of the sphere.

d
Friction force not always oppose the motion

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