We need to apply a greater force for setting a heavy box into motion. However, once it is in
motion it can continue with the motion with a comparatively less force.
Answers
Answered by
0
Answer:
The force needed is greater. When we want to get the box moving, we must supply a force greater than the frictional force so that there is a net force acting on the box. The box will then accelerate, as in F = ma. To keep the box moving at constant velocity, we just have to supply a force equal to the frictional force, so that no net force acts on the box. The box maintains its state of motion.
The force of friction is related to the weight of the box because the heavier the box, the higher the pressure the box exerts on the floor. Both the surfaces of the box and the floor will press harder against each other, so the force of friction increases.
Explanation:
Similar questions