Question

An object of mass 40kg is raised to a height of 5m above the ground. calculate potential energy of the object

Answer 1

Potential Energy = mgh
where m= mass; h= height ; g= acceleration due to gravity = 9.8m/s^2
P.E= 40x5x9.8=1960Joules=1.96kJ

Answer 2

mass=40lg

height = 5 m

acceleration due to gravity = 9.8m/s^2

we know that

potential energy =meh

=40×5×9.8

=1960J