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Physics
Physics
Problem
A body of mass
m
m
m
moves with speed
v
v
v
in a circle of radius
r
r
r
, experiencing a centripetal force
F
F
F
. If its mass is doubled and the radius is halved while the speed remains
v
v
v
, the new centripetal force will be a)
8
F
8F
8
F
b)
4
F
4F
4
F
c)
F
F
F
d)
2
F
2F
2
F
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