A truck of mass m1200kg is moving up a hill with constant, Ask an Expert

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A truck of mass M=1200kg is moving up a hill with constant acceleration a. A blok of mass m=3.3kg is held in place by static friction, with coefficient of friction to be .56 between te block and truck bed. The hill is inclined at angle=22^o with respect to the horizontal. What is the max acceleration the truck can have before the block will slip?

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