Question
Tommy Lee, who weighs 170 lbs, is to be lifted 20 ft into the air on...
Tommy Lee, who weighs 170 lbs, is to be lifted 20 ft into the air on a platform to play a drum solo. The platform and drums, which together weigh 250 lbs, are lifted by a chain weighing 10 lbs/ft which is attached to a pulley 40 ft in the air. How much work is done in raising the Motley Crue drummer into the air? 040 (820 - 103) de JO (820 – 107) des " (620 – 10z) de 620 – 102) de •
Answers
(170+250 +20(10) = 620 lb (be cause Pulley is a at hoft, height) XHE 20 Iftika K 20 (10) K 170+250 +40 (10) = 820 db. Bx = 620 + 20-x (20)(Po) =Byx = 620 + 200-fox. = 820-60 x ... work done w = {(820 tox) dx 1 x=0 20 - Second option is correct
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