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An object of mas 12 kg is at a certain h...

An object of mas 12 kg is at a certain height above the ground. If the potential energy of the object is 480 J, find the height at which the object is with respect to the ground. Given `g=10ms^(-2)`.

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Mass of the object `m=12kg`,
Potential energy `E_(p)=480J`
`E_(p)=mgh`
`therefore 480J=12kgxx10ms^(-2)xxh`
`h=(480J)/(120kgms^(-2))=4m`
The object is at the height of 4 m.
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