Question

Henry is trying to move his 232 kg refrigerator. He is pushing, but the refrigerator is not moving. If the maximum coefficient of friction between the refrigerator and the floor is 0.87, how hard does Henry have to push in order to get the refrigerator to move?

Answer 1

Once the fridge is moving you are still applying the same push force but now the opposing friction (now kinetic) force is less.