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the zero of gravitational potential energy is: 1)always at ground level 2)arbitary 3)at sea level 4)at the centre of the earth which option is correct explain

the zero of gravitational potential energy is:

1)always at ground level
2)arbitary
3)at sea level
4)at the centre of the earth
which option is correct explain

Grade:12

1 Answers

AKASH GOYAL AskiitiansExpert-IITD
419 Points
10 years ago

Dear Sunny

Potential energy is not absolute it depends on reference. we can take any arbitrary reference where Potential energy is zero. it is arbitrary.

suppose we take reference at H height from ground then it means that P. E at ground is mgH less than the reference.

just difference of PE matters 

 

All the best.                                                           

AKASH GOYAL

AskiitiansExpert-IIT Delhi

 

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