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April 16, 2014

Homework Help: physics

Posted by Charles on Sunday, January 27, 2008 at 12:17am.

One last question:
If a 12lb. block is slowly tilted from horizontal when the plank reaches 30 degrees the block begins to slide.
To find the coefficient of the static friction you take the tangent form of 30 degrees?
To find the friction force you multiply the coefficient of the static friction times the weight?
But how do you find the Fn?

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