Physics · Static and Kinetic friction, laws of friction, rolling friction
A box is placed on an inclined plane and has to be pushed down. The angle of inc
A box is placed on an inclined plane and has to be pushed down. The angle of inclination is :
- A. Equal to the angle of friction
- B. More than the angle of friction
- C. Equal to the angle of repose
- D. Less than the angle of repose
Step-by-step solution
The angle of repose is the maximum angle at which an object remains at rest on an incline without sliding. If the box needs to be pushed down, it means friction is preventing sliding, so the incline angle is less than the angle of repose. Since the angle of friction equals the angle of repose, the same condition holds.
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