QUESTION3(11.38) An Atwood machine consists of two masses, mA= 6.9 kg and mB = 8.7 kg , connected by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius R0 = 0.40 m and mass 0.80 kg . Part A Determine the magnitude of the acceleration a of each mass. Express your answer using two significant figures. Part B What percentage of error in a would be made if the moment of inertia of the pulley were ignored? Ignore friction in the pulley bearings. Express your answer using two significant figures. (Error=%?)

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Q: A 99.2 kg object rises by 35.8 m.  How much potential energy (in joules) has this object gained?

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.