A 5.92 box sits at rest at the bottom of a ramp that is 8.06 long and that is inclined at 35.0 above the horizontal. The coefficient of kinetic friction is 0.40, and the coefficient of static friction is 0.50.
a) What constant force, applied parallel to the surface of the ramp, is required to push the box to the top of the ramp in a time of 3.90?