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A homogeneous disk of 5 cm radius and 5 kg mass rotates on an axle AB of length 0.25 m and rotates about a fixed point A. The disk is constrained to roll on a horizontal floor. A 0.25 m OA. 100 rad/s in the x direction and -20 rad/s in the z direction C Given that the disk rotates counterclockwise at a rate of 100 rad/s about axle AB, the angular velocity of the disk is (Hint: use the right hand rule to determine positive and negative direction.) OB. 100 rad/s in the x direction and +20 rad/s in the y direction OC. 100 rad/s in the x direction and -20 rad/s in the y direction B OD. 100 rad/s in the x direction and +20 rad/s in the z direction 5 cm

A disk rotates about an axis through its center. Point A is located on its rim and point B is located exactly one third of the way from the center toward the rim. What is the ratio of the angular velocity wa to that of wB, and the tangential velocity VA to that of VB? (a) the angular velocity wA to that of B = WA = WB (b) the tangential velocity VÀ to that of VB VA VB

Q2. Two uniform disks of the same material are attached to a shaft as shown. Disk A has a weight of 10 lb and a radius r = 6 in. Disk B is twice as thick as disk A. Knowing that a couple M of magnitude 22 lb. ft is applied to disk A when the system is at rest, determine the radius nr of disk B if the angular velocity of the system is to be 480 rpm after 5 revolutions. A M b B 2b