The motor M reels in the cable at a constant rate of 100 mm/s. Determine (a) the velocity of load L, (b) the velocity of pulley B with respect to load L.

2. For a short period of time, the motor turns gear A with a constant angular acceleration, starting from rest. The cord is wrapped around pulley D which is rigidly attached to gear B. 2) if the radii are: A = 70 mm, r = 230 mm, and rp = 90 mm, the constant angular acceleration of gear A, AA is 4.4 rad/s², determine the angular acceleration of gear B, CB, in rad/s². Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. αA A P Your Answer: 1'B Answer -1'p'

8. The motor draws in the cable with an acceleration of 3 m/s2. The beam has a uniform mass of 20 kg/m , and the crate has a mass of 250 kg . Neglect the mass of the motor and pulleys.

The mass B is attached to the arm that rotates in the horizontal planeabout a pin in collar A. A motor in A keeps the angular speed of the arm constant at ˙ θ = 2.4 rad/s. Determine the velocity and acceleration of A as functions of the angle θ. Assume that vA = 0 when θ = 0. Friction and the mass of the rotating arm can be neglected.