In a pole sliding game among friends, a 90 kilogram man makes a total vertical drop of 7.0 meter while gripping the pole which exerts and upward force (call it Fp) on him. Starting from rest and sliding with a constant acceleration, his slide takes 2.5 second.
a) Draw the man's free body diagram being sure to label all the forces.
b) Find the magnitude of the upward force exerted on the man by pole?
c) A friend whose mass is only 75 kilogram, slides down the similar distance, but the pole force is only 80 percent of the force on his buddy. Determine how long did the second person slide take?