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September 3, 2014

Homework Help: Physics

Posted by robert on Wednesday, December 7, 2011 at 10:09pm.

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?

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