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Minh pulls a 10-kg crate on a rough inclined ramp with a cable tension F, directed towards the top and parallel to the plane. The angle of inclination of the plane is 30 and the coefficients of static and kinetic friction between the block and the inclined plane are given as 0.50 and 0.30 respectively.

a) What is the maximum value of the applied force F that he can exert before the crate slides up the ramp?

b) What is the value of the force F that he should exert so that the crate moves slowly down the ramp at an acceleration, a = 1.0m/s^2

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