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13.
REASONING AND SOLUTION
a.
In terms of the period of the motion, the centripetal force is written as
F
c
= 4
π
2
mr
/
T
2
= 4
2
(0.0120 kg)(0.100 m)/(0.500 s)
2
=
0.189 N
b.
The centripetal force varies as the square of the speed. Thus, doubling the speed
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This note was uploaded on 01/29/2010 for the course CALC 01:640:135 taught by Professor Soffer during the Spring '08 term at Rutgers.
 Spring '08
 SOFFER

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