Question

A cat sits on the top of a fence that is 2.0 m high. The cat has a gravitational potential energy of 88.9 J. What is the mass of the cat ?

Answer 1

Answer:

The mass of the cat is 4.534 kg

Explanation:

Given

gravitational potential energy $PE_{G}$ = 88.9 J

Height h = 2.0 m

To find: mass of the cat

We know that the gravitational potential energy is given by

$PE_{G}$  = mgh, where

m = mass of body

g = acceleration due to gravity = 9.8 m/$s^{2}$

h = height above ground

Hence , mass m =  $\frac{PE_{G}}{gh}$

                           = $\frac{88.9}{9.8 x 2.0}$

                           = 4.534 kg

Hence the mass of the cat is 4.534 kg