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University Physics with Modern Physics with Mastering Physics (11th Edition)

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4.44: a) If the gymnast climbs at a constant rate, there is no net force on the gymnast, so the tension must equal the weight; mg T = . b) No motion is no acceleration, so the tension is again the gymnast’s weight. c) a m ma mg T w T = = - =
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Unformatted text preview: -(the acceleration is upward, the same direction as the tension), so ) ( a + = g m T . d) a m ma mg T w T-= =-=-(the acceleration is downward, the same opposite as the tension), so ) ( a -= g m T ....
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