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Instruction; Please show your solutions

4. A 5 kg block resting on a frictionless inclined plane with an inclination angle of 20 is attached to another 5 kg block that hangs freely by a string passing over a massless, frictionless pulley. What is the resulting acceleration of the two blocks? 5. A block weighing 60 N rests on a horizontal floor. a) What is the minimum force that will make the block move if the coefficient of static friction is 0.20? b) What is the minimum force that will keep the block moving at uniform speed once it starts moving if the coefficient of kinetic friction is 0.10