Causing an object to start moving on a frictional surface requires
A) less force than is needed to keep it moving on the surface.
B) the same force as is needed to keep it moving on the surface.
C) more force than is needed to keep it moving on the surface.
D) a force equal to the weight of the object.
E) a force opposite to the normal force.

Question

Quizplus · Accepted Answer

This statement is given in the concept of physics that to start an object moving on a frictional surface requires more force than is needed to keep it moving on the surface. This is because when the object is at rest, the force of static friction is greater than the force trying to move the object. Initially, when force is applied, the force of static friction for the object is overcome. However, once the object is in motion, the force required to keep it moving is less than the force required to start it moving.

Causing an Object to Start Moving on a Frictional Surface