Two blocks with masses m1 and m2 are connected as shown in the figure with a cord, which can be considered massless (its mass is much smaller than the masses of the blocks). (a) Draw a free body diagram for each block. (b) Find the acceleration of the system in terms of m1, m2, 0, and g. (c) What is the relationship between ml and m2 for the acceleration to be in one direction or the other? Assume incline is frictionless. mi m2

Two blocks each of mass m are fastened to the top of an elevator as in the figure below. The elevator has an upward acceleration a. The strings have negligible mass. (a) Find the tensions T, and Tz in the upper and lower strings in terms of m, a, and g. T = T2 = (b) Compare the two tensions and determine which string would break first if a is made sufficient large. This answer has not been graded yet (c) What are the tensions if the elevator cable breaks? Tz = m 1.60 m/s m

A block of mass m = 5.3 kg is pulled up a 8 = 24° incline as in the figure below with a force of magnitude F = 38 N. F m i (a) Find the acceleration of the block if the incline is frictionless. (Give the magnitude of the acceleration.) m/s² (b) Find the acceleration of the block if the coefficient of kinetic friction between the block and incline is 0.11. (Give the magnitude of the acceleration.) m/s²

A book of mass m is pushed against a smooth frictionless wall by a force P that makes an angle 0 the horizontal. Find: a) The normal force on the book. b) The acceleration of the block in terms of P, m, 0, and constants. c) Look at the special values of the angle to see if the above answers make sense