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April 19, 2014

Homework Help: Physics

Posted by Bobby C on Sunday, February 14, 2010 at 10:10pm.

A 32 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 23.2 the crate begins to slide downward.

(a) What is the coefficient of static friction between the crate and the ramp?

(b) At what angle does the crate begin to slide if its mass is doubled?

I have no idea how to find part a.

For part B why is it not twice the angle?

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