1. A large block m1 slides on top of a small block m2 on a frictionless ramp inclined at angle ?. The coefficient of friction between the two blocks is µ. Draw separate free body diagrams for each block, and write Newton's 2nd Law for each block. Find the acceleration of each block and the tension in the string that connects the blocks. Evaluate your algebraic solution for m1 = 20 kg; m2 = 10 kg; ? = 30°; µ = 0.1.
2. A 0.25-kg tether ball is attached to a vertical pole by a 1.2 mcord. Assume that the cord is attached to the center of the ball. If the ball moves in ahorizontal circle with the cord making an angle of 20° with the vertical, (a) what is the tensionin the cord? (b) What is the speed of the ball? (c) What is the frequency?
