A man brings to work a 5.7 kg box of books. By the time hereaches the ramp outside of his office, he attaches a (massless)rope to the box and drags it up the incline. a) If he pulls at the22.62degree angle and the coefficient of static friction betweenthe box and the ramp is .42, what is the minimum force does the manmust apply in order to make the box slide? b) After pulling longenough to get the box going 3.4m/s, he lets go of the rope. If the coefficient of kinetic friction between the box andthe ramp is .2, how long does it take the box to stop?