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What work is done when a person lifts a 1.6 kg package and places it on a shelf 2.4m high?
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What work is done when a person lifts a 1.6 kg package and places it on a shelf 2.4m high?

User Katze
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1 Answer

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Answer:

Step-by-step explanation:

Work is the dot product of force and distance


W = F*d=Fd*\cos(theta)

The only force acting on this box is the force of gravity (weight) which is mass*gravity

F = (1.6)(9.8) = 15.68N

The angle is the angle between the force and distance. In this case it is zero, therefore cos(ะค) = 1


W=15.68*2.4=37.6J

User Esterlinkof
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