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A 2.0 kg book is lying on a 0.79 m -high table. You pick it up...

A 2.0 kg book is lying on a 0.79 m -high table. You pick it up and place it on a bookshelf 2.1 m above the floor.

Part A

During this process, how much work does gravity do on the book?

Express your answer with the appropriate units.
Wg

W g

=

nothingnothing

SubmitRequest Answer

Part B

During this process, how much work does your hand do on the book?

Express your answer with the appropriate units.
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Homework Answers

Answer #1

a)

workdone by gravity

W = mg d = 2* 9.8* (2.1 - 0.79 = - 25.676 J

====

b)

Wh = 25.767 J

======

Comment before rate in case any doubt, will reply for sure.. goodluck

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