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April 20, 2014

Homework Help: Math: Dot Product

Posted by Anonymous on Sunday, February 24, 2008 at 2:06pm.

A box with a weight of 215 N rests on a ramp. There is a frictional force of 27 N exerted on the box directed up the ramp. If the ramp is inclined at 30 degrees, what force must be applied at an angle of 40 degrees to the ramp to maintain equilibrium?

Textbook Answer: 80.5 N and 105 N

Please explain thoroughly!

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