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Engineering · Mechanical Engineering
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Please help with 14.144!!!
733 14.143 The 300 gram billiard ball of 30 mm radius is struck by a cue stick that exerts an average force of 600 N horizontally over interval. If h 10 mm, determine the velocity of the center of the ball and the angular velocity of the ball immediately after the 14.143 AND 14.144 14144 The 300 gram billiard ball of 30 mm radius is struck by a stick that exerts an average force of 600 N horizontally over a s interval. Immediately after 0 being hit, the billiard ball rolls without slipping. Determine (a) the height h for the cue stick, and (b) the velocity of the ball after the impact. I4145 The 2 lb equilateral plate is rotating at 5 rad/s when it hits projec- tion A with the plates centerline oriented vertically. The collision has a duration of 8 ms, after which the plate rebounds at 1 rad/s. Determine the average contact force at projection A and the average reaction at pivot B *14.146 The 20 kg flywheel A, whose radius of gyration is 250 mm, and the 40 kg disk B are connected by means of a belt that does not slip over the contacting surfaces. The flywheel is driven by a torque M PROB. 14.14s 10t where M is in newton-meters and t is in seconds. Determine the time required for the disk to attain an angular velocity of 100 rad/s starting from rest. tan PROB. 14.146 .14.147 Two cables are wrapped securely around the inner drum of the stepped disk. The disk weighs 150 lb and its radius of gyration is 16 in. The coefficients of friction between the drum and the hori- zontal surface are H, 0.40, puk 0.30. A tensile force F 10t lb, where t is elapsed time in seconds, is applied to the cable. Determine (a) the value of t at which the disk begins to skid over the ground, and (b) the velocity of the center of the cylinder 2 s idd begins.
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