1. (15 points)
block a of mass 4.0 kg is pulled along a horizontal table by a force of 15 n, which is applied
by a light string that passes over a light frictionless pulley, as shown above. the coefficient
of kinetic friction betveen the block and the surface is 0.25.
(a) on the dot below, which represents the block, draw and label the forces (not components)
that act on the block as it is pulled across the table.