An object rests on a rough surface. A small horizontal force is applied to the o

Question

An object rests on a rough surface. A small horizontal force is applied to the object, but the object doesn't move. (a) Draw a force diagram and label each force. Specify the type of the frictional force. (b) In this situation, how does the magnitude of the frictional force compare to the magnitude of the applied force? Choose from the following: (i) The magnitude of the frictional force is larger than the magnitude of the applied force. (ii) The magnitude of the frictional force is equal to the magnitude of the applied force. (iii) The magnitude of the frictional force is smaller than the magnitude of the applied force.

Explanation / Answer

Say the force applied is 10 Newton and the maximum frictional force offered by the surface is 15 Newton. In this case the frictional force acting would be only 10 Newton just to oppose the motion and not 15 @@Newton because it would make the body to move in opposite direction.

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