1)At the gym, a weightlifter pulls 1 meter of rope with 300 N of force. The mass...
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1)At the gym, a weightlifter pulls 1 meter of rope with 300 N of force. The mass on the other end of the pulley rises 0.6 meters off the ground. How much weight did the weightlifter lift?
2) What is the kinetic energy of a 500 Kg train car traveling at 30 meters/second?
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