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A 65.0 kg box is pushed up a ramp inclined at 27.0∘. The applied force (F)...

A 65.0 kg box is pushed up a ramp inclined at 27.0∘. The applied force (F) is horizontal and causes the block to move at a constant speed. Determine the magnitude of the applied force,

a. when the ramp is frictionless.

b. when the coefficient of kinetic friction is 0.200.

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