A W = 53 lb block is pushed with a force that is defined by the equation F = (50 + 32) lb. The coefficient of kinetic friction of the block and surface is p. = 0.2. The spring is initially unstretched _r uncompressed. The block is initially at rest. At the instant, the block has moved a distance of 3 = 1.25 ft. F =f{s} Values for the figure are given in the following table. Note the figure may not be to scale. Variable Value k 19'2 ft 91 30 degrees Using equations of motion in rectangular coordinates and principle of work and energy, a. Find an equation for the normal reaction between the block and surface as a function of s, N( s) . b. Determine final velocity of the block, Vml. c. Determine the power developed by the force at the instant, P, in horsepower