How much work does it take to raise a #52 kg # weight #21 m #?

1 Answer
Tanish J.
Dec 31, 2015

10712.52 Joules

Explanation:

The work done to raise an object from the ground is equal to its gravitational potential energy, given by:

#U=mgh#

where,

#U# is the gravitational potential energy
#m# is the mass of the object
#g# is the acceleration due to gravity #=9.81 m/s^2# for the earth
and #h# is the height to which the object is raised.

Therefore, the work done,

#W=U=52*9.81*21#

#=10712.52J#

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