Question 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?

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 Log in to Reply

Answer: Work is 1.7 kJ, Power is 280 WExplanation:Work W = mgh, power P= W/tW = 85 kg·9.81m/s²·2 m = 1667.7 J

P = 1667.7 J / 6 s = 277.95 W