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57.
The centripetal force on the airplane above is quadrupled while keeping the radius the same. What happens to the velocity of the airplane?
A.
one-fourth as much
C.
doubled
B.
one-half as much
D.
quadrupled
m v
2
r x F
centripetal
F
centripetal
= ----------- => v = (-----------------------)
1/2
r m
If the centripetal force is quadrupled, the velocity is doubled.
