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April 21, 2014

Homework Help: physics

Posted by Tina on Wednesday, June 22, 2011 at 8:32pm.

How can I find kinetic friction (Fk) without mu? I know the normal force which is 201N. The mass of the object is 30kg.
This is the full questions of it helps. I just don't understand how to find kinetic friction

1. If a 30kg object experiences a normal force of 210N when traveling down a ramp, what is the angle of incline? Also, calculate the force of friction and the coefficient of friction.
Answers: μ(mu)=0.98
Θ=44.5 degrees

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