A grinding wheel is in the form of a uniform solid disk of radius 6.99 cm and mass 2.08 kg. It starts from rest and accelerates uniformly under the action of the constant torque of 0.591 N · m that the motor exerts on the wheel.(a) How long does the wheel take to reach its final operating speed of 1 230 rev/min? s(b) Through how many revolutions does it turn while accelerating? revNeed Help?
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Physics, 22.06.2019 00:50, gungamer720
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?
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Physics, 22.06.2019 08:30, mikemurray115
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Physics, 23.06.2019 01:00, dlaskey646
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A grinding wheel is in the form of a uniform solid disk of radius 6.99 cm and mass 2.08 kg. It start...
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