Work = force × distance: W = F d Part A Calculate the work done in lifting a 480
ID: 1732238 • Letter: W
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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