A 5.540 kg block of wood rests on steel desk. The coefficient of static friction between the block and the desk is /s 0.655 and the coefficient of kinetic friction is uk = 0.255. At time = 0,a force F = 21.9 Nis applied_ horizontally to the block: State the force of friction applied to the block by the table at times = 0 and > 0. Us,k > 0 Consider the same situation, but this time the external force F is 44.1 N. Again, state the force of friction acting 0n the block at times =0 and = 0 > 0