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A flat inclined plane of steel at 16 degrees from horizontal has a rectangular crate of...

A flat inclined plane of steel at 16 degrees from horizontal has a rectangular crate of wood weighing 27kg resting on it. What is the minimum coefficient of static friction between the crate and steel will the crate not slide? If the crate is accelerating upward at 1.1 m/s^2, and the coefficient of kinetic friction is 0.17 and the force on the crate is horizontal what is its magnitude?

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