29-03-2015
Physics

Answered

what is gravitational potential of a motionless 20kg rock that is 100m above the surface of the earth

Answer :

olemakpadu olemakpadu

29-03-2015

Gravitational Potential Energy = mgh.

Where m = mass in kg.
g = acceleration due to gravity = 9.81 m/s2.
h = height in metres.
PE is in Joules

Potential Energy = 20 * 9.81*100 = 19620 J

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