Work = force × distance: W = F d Part A Calculate the work done in lifting a 480

Question

Work = force × distance: W=Fd

Part A

Calculate the work done in lifting a 480-N barbell 2.2 m above the floor.

Express your answer to two significant figures and include the appropriate units.

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SubmitRequest Answer

Part B

What is the gain of potential energy of the barbell when it is lifted to this height?

Express your answer to two significant figures and include the appropriate units.

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Work = force × distance: W=Fd

Part A

Calculate the work done in lifting a 480-N barbell 2.2 m above the floor.

Express your answer to two significant figures and include the appropriate units.

W =

nothingnothing

SubmitRequest Answer

Part B

What is the gain of potential energy of the barbell when it is lifted to this height?

Express your answer to two significant figures and include the appropriate units.

?U =

nothingnothing

Explanation / Answer

Workdone= - Fd= - 180*2.2= - 396 J

Negative sign indicates work is done on the system. You can neglect negative sign in order to get just magnitude

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potential energy gained= 396 J

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Do comment in case any doubt . Goodluck

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