How much work is required to lift an object with a mass of 5.0 kilograms to a height of 3.5 meters?

2 answers:

7 0

Work is Force multiplied by distance: work = Fd

work = mgh

work = (5.0 kg)(9.8 m/s)(3.5 m)

work = 171.5 joules or for two sigfigs, 170 joules

Veronika [31]3 years ago

6 0

I believe it would be 172 J (or 1.72 · 10² J)

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Considering that the book is moving with constant speed, the force applied by Anna must be the same that the friction force:

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If we clear the previous equation:

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Ne4ueva [31]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

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Molodets [167]

Answer:

50 lb

Explanation:

Given,

The weight of astronaut's life support backpack on Earth (w) = 300 lb

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