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Physics
Physics
Problem
Which one of the following expressions correctly gives the gravitational potential energy of a body of mass
m
m
m
kept at a height
h
h
h
above the chosen reference level? a)
−
m
g
h
-\,mgh
−
m
g
h
b)
m
g
h
mgh
m
g
h
c)
1
2
m
g
h
\dfrac12\,mgh
2
1
m
g
h
d)
1
2
m
v
2
\dfrac12\,mv^2
2
1
m
v
2
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