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why is the final potential energy of a chain of mass m hanging down a plain negative?

why is the final potential energy of a chain of mass m hanging down a plain negative?

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2 Answers

SAGAR SINGH - IIT DELHI
878 Points
13 years ago

Dear student,

Finally the chain will have potential energy of mgl...

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Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

paradox xyz cool
29 Points
13 years ago

For potential energy ( U )  you can take any plain as the zero level (origin), not necessary ground.

Length of the object is considered from that plain. 

If u consider U=0 for the plain below which the chain is hanging then the potential energy of the chain will be negative.

I might be wrong, but I think I am right. plzzz approve if i am right.

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