A deadlift is a weightlifting exercise in which a weighted bar is raised straight up from the ground, pulled to the height of the weight lifter's hips, and then placed back on the ground. The world record for deadlifting is 500kg.
(a) How much work did the world record lifter do in raising the bar up to a height of 95 cm?
(b) How much work did he do while lowering the bar back to the ground?
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A deadlift is a weightlifting exercise in which a weighted bar is raised straight up from the ground...
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