Question

A box is pulled up a rough ramp that makes an angle of 22 degrees with the horizontal surface. The surface of the ramp is the x-plane. What is the magnitude of the force of tension if the net force in the x direction of 98 N?

Answer 1

hey mate your answers is

. Since there is no friction, the kinetic energy at the bottom =potential energy at the top. The change in height h= 2 * sin(20) = 0.684 m 
PE = mgh = KE 

solve for v 

2. Do this the same as 1. 

3.KE + PE at start = PE at end 

4.The component of weight force parallel to the plane is 50 sin 37° down the plane. There is also the 10 N friction force which adds to this so the force applied by the worker is 50*sin(37°) + 10 = 40N. The length is not part of the problem

hope its help you