Answer to Question #157395 in Physics for shalize

Question #157395

An iPhone at rest on a 0.76 m tall desk has 1.296 J of gravitational potential energy. Calculate the mass of the iPhone.

Expert's answer

"PE=mgh\\to"

"m=PE\/gh=1.296\/(9.8\\cdot0.76)=0.174(kg)=174(g)"

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