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A cinder block is sitting on a platform 20m high. It weighs 7.9kg. The block has
_____________ energy. Calculate it.

Answer :

Height=h=20m

Mass=m=7.9kg

[tex]\\ \rm\longmapsto P.E=mgh[/tex]

[tex]\\ \rm\longmapsto P.E=20(10)(7.9)[/tex]

[tex]\\ \rm\longmapsto P.E=20(79)[/tex]

[tex]\\ \rm\longmapsto P.E=1580J[/tex]

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