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.
The potential energy (PEg) of an object is given by the equation PEg = mgh, where m is the mass, g is the acceleration due to gravity, and h is the height.
Given:
m = 250 kg
g = 9.8 m/s^2
h = 0.5 m
Using the formula, we can calculate the potential energy of the mass:
PEg = mgh
PEg = (250 kg)(9.8 m/s^2)(0.5 m)
PEg = 1225 kg * m^2/s^2
Rounding to the nearest whole number:
PEg ≈ 1225 kg * m^2/s^2
Therefore, the mass has approximately 1225 joules (J) of potential energy (PEg).