Question

. A 4 kilogram cat is resting on top of a bookshelf that is 2 meters high. what is the cat's gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8 m/s2?

a. 6 j
b. 8 j
c. 20 j
d. 78

Answer 1

Potential Energy = Mass x Gravitational pull x Height

which is,

Ep = 4 x 9.8 x 2
Ep = 78 J