Answer to Question #342289 in Physics for orrvax

Question #342289

A trophy sits on top of a shelf 2.30 m above the floor. If the trophy has a potential energy of 90 J, its mass is __________ kg.

Expert's answer

"E_p=mgh"

"m=\\frac{E_p}{gh}=\\rm\\frac{90\\: J}{9.8\\: N\/kg*2.30\\: m}=4.0\\:kg"

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