Question

Using a horizontal force of 200N. We intend to move a wooden cabinet across a floor at a constant velocity. What is the frictional force that will be exerted on the cabinet?

Answer 1

Answer:

200 N

Explanation:

Since the block is moving with constant velocity, acceleration is zero.

Clearly , the vector sum of all forces must be zero.

Force of friction balances the applied force.

Force of friction is 200 N.(in opposite to the direction of motion.)

Answer 2

Answer:

Since the wooden cabinet is to be moved at constant velocity, this means that the whole force of 200 N will be used to overcome the force of friction. Thus, the force of friction exerted on the cabinet will be equal to the force applied, which is 200 N.