Performing weight-lifting exercises
An athlete whose mass is 85.0 is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 580 . He lifts the barbell a distance of 0.60 in a time of 1.4 .
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A uniform cylinder with radius 20 cm has been attached to two cords and the cords are wound around it and hung from the ceiling. the cylinder is released from rest and the cords unwind as the cylinder descends. a) what is the acceleration of the c
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