What is the gravitational potential energy of a # 49 kg# object on a shelf # 7/4 m # high?

1 Answer
P dilip_k
May 9, 2016

#840.35J#

Explanation:

The gravitational PE of an object of mass, #m=49kg# at height #h=7/4m# is the work done by an agent to lift the body to that heigt from the ground.

So PE= Work done = #"Force"xx"displacement=mxxgxxh#
#=49xx9.8xx7/4J=840.35J#

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