Guest

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?

Grade:

2 Answers

SAGAR SINGH - IIT DELHI
879 Points
11 years ago

Dear student,

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

Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.

All the best.

Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..

 

Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

paradox xyz cool
29 Points
11 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.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free