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

m = 50 [kg]

Step-by-step 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]`