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Unformatted text preview: m = 10 Kg is attached to a cable that wraps around the pulley as shown. The pulley is pivoted at the center, and the angle of incline is = 30. The radius of the pulley is R = 0.5 m and its moment of inertia is I = 0.4 Kgm 2 . The block is released from rest and slides down the ramp, and the coefficient of friction is k = 0.2 between the block and the ramp. k (a) Find the acceleration of the block. a = ________ 2.76 m/s 2 __________ (b) Find the tension in the cable. T = ________ 4.42 N __________ 4. A 20 Kg slender rod pivoted at its center has a length of 6 m. A motor applied a torque of 2400 Nm on the rod to turn it from rest. (a) Find the average power by the motor when the rod rotates an angle of 500 rad. _______ 240 kW _________ (b) Find the instantaneous power of the motor at the moment that the rod rotates an angle of 500 rad. _______ 480 kW __________...
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 Spring '08
 TSChang
 Physics, Work

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