Question

6. What is the mass of a boy who is standing on top of a 1.5 meter high
wall and has 735 J of gravitational potential energy?

Answer 1

Answer:

m = 50 [kg]

Explanation:

The potential energy can be calculated by means of the following equation.

$E_{p}=m*g*h$

where:

Ep = potential energy = 735 [J]

m = mass [kg]

g = gravity acceleration = 9.81 [m/s²]

h = elevation = 1.5 [m]

Now replacing:

$735=m*9.81*1.5\\m = 50 [kg]$