Question

A weightlifter lifts a 250-kg mass 0.5 meters above his head, how much PEg does the mass have (Note: g=9.8 m/s2)? Round your answer to the nearest whole number.

Answer 1

i can confirm it is 1,225

Step-by-step explanation:

based on the website. I just did this question.

Answer 2

The Gravitationa potential energy of the mass (PEG) is given by:

`U=mgh`
where
m is the mass
g is the gravitational acceleration
h is the heigth of the mass above the reference level (the ground)

In this problem,
`m=250 kg` and
`h=0.5 m`, therefore the gravitational potential energy of the mass is:

`U=mgh=(250 kg)(9.8 m/s^2)(0.5 m)=1225 J`