Work done to lift the mass is given by
W = mgH
here we know that
m = mass = 2 kg
g = acceleration due to gravity = 9.8
H = height = 130 m
now using the above equation we can write
[tex]U = 2* 9.8 * 130[/tex]
[tex]U = 2548 J[/tex]
so the energy required to do the work is 2548 J
