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Physics, 02.12.2020 22:20 patriciahonsakpa6u5f
Johnny ties a rope around his waist and throws one end of the rope over a pulley so that he can lift himself into the air. Johnny has a mass of 75 kg. a) Draw a free-body diagram b) how hard must he pull downward to raise himself slowly at a constant speed? c) If he increases this force by 15% what will his acceleration be?
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