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Two people whose combined weight is 1600N are being lifted by a helicopter. The tension on the rope is 1763N. What work is done by the weight and the tension on the people after they are lifted a distance of 20m?

Sagot :

W=F×d
F=Tension in a rope minus the weigh of two people
F=1763-1600
F=163

W=163×20
W=3260 KN.m