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A crate is resting on a ramp that is inclined at an angleabove the horizontal. As the angle is incrased the crateremains in place until the angle reaches a value of 38degrees. Then the crate begins to slide down the slope.

(a) Determine the coefficient of static friction between the crateand the ramp surface.

(b) The coefficient of kinetic frictionbetween the crate and the ramps surface is 0.600. Find the acceleration of the moving crate.

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