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A construction worker uses a pulley and a rope to
raise an 85 kg person to a height of 2 m in 6 s. How
much did he do?

Respuesta :

keijosalonen

Answer: Work is 1.7 kJ,  Power is 280 W

Explanation: Work  W = mgh, power P= W/t

W = 85 kg·9.81m/s²·2 m = 1667.7 J

P = 1667.7 J / 6 s = 277.95 W

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