A block is resting on a ramp as shown in the figure below. You can change the inclination angle by raising one end of the ramp. The block has a mass...

A block is resting on a ramp as shown in the figure below. You can change the inclination angle by raising one end of the ramp. The block has a mass m = 7.5 kg. At the interface between the ramp and the block, the coefficient of static friction is s = 0.45, and the coefficient of kinetic friction is k = 0.315. What is the acceleration at the point where the block begins to slip