You are pulling a box across a floor by a rope. The rope you are
pulling is at a = 20? angle above the horizontal. The mass of the
box is m = 35 kg. You are pulling with a force of T = 250 N. The
kinetic friction coefficient between the box and the floor is
µk = 0.500.
(a) Draw a free body diagram for the box.
(b) Is the normal force acting on the box equal to the weight of
the box? If not, find an expression
for the normal force in terms of T, m, µk, g, and .
(c) What is the acceleration of the box?