Two rods ADB and DE are connected to three collars as shown. Knowing that the angular velocity of ABD is 5 rad/s clockwise and the angular velocity of ABD is 0.2 rad/s counterclockwise determine at the instant shown a. The angular velocity of DE b. The angular acceleration of DE E 9 in D 9 in. 9 in. -9 in.-9 in.

Rotation of the lever OA is controlled by the motion of the contacting circular disk whose center is given a horizontal velocity v. Determine the expression for the angular velocity of the lever OA in terms of x.

4) Wire is being drawn at a constant rate from a spool by applying a vertical force P to the wire as shown. The spool and the wire wrapped on the spool have a combined weight of 20 lb. Knowing that the coefficients of friction at both A and B are 0.2 and 0.5, respectively. Determine the required magnitude of the force P. 5 in. 4 in. P A B

A rotating shaft with a belt-type brake is shown The static coefficient of friction between the in Fig. brake drum and the brake belt is 0.20. When a 75-lb force P is applied to the brake arm, rotation of the shaft is pre- vented. Determine the maximum torque that can be re- sisted by the brake If the shaft is tending to rotate clockwise. 6 in. P A. B D 3 in. 9 in. 18 in.