posted by robert on .
A box is being pushed up the ramp by you at a 15 degree angle. The coefficient of kinetic friction between the box and ramp is .4. The box has a mass of 12 kg and you are pushing up the ramp with a force of 95N. What is the kinetic frictional force? What is the sum of forces (net force) acting parallel to the plan?
for the first question I got -46N and on the second question do I add gravity parallel to the plane with frictional force and add that to force push?