A 3.47 kg block is placed at one end of a wooden plank that is 9.05 m long. The plank is slowly tilted. (a) The block starts to slide when the angle reaches 70 degrees. What is the coefficient of static friction between the block and the ramp? (b) The coefficient of kinetic friction between the block and the ramp is about uR = 0.13. At what rate will the block accelerate down the plank if it is tilted at 60 degrees?

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: