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

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

Answer 2

Answer:

i can confirm it is 1,225

Explanation:

based on the website. I just did this question.