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Physics
Physics
Problem
Show that the work required to lift a body of mass
m
m
m
vertically through a height
h
h
h
and leave it with a speed
v
v
v
is given by
W
=
m
g
h
+
1
2
m
v
2
W = mgh + \tfrac{1}{2} m v^2
W
=
m
g
h
+
2
1
m
v
2
.
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