Question on: JAMB Physics - 2011
An object of mass 2 kg moves with a velocity of 10 ms1 round at circle of radius 4 m. Calculate the centripetal force on the object
A
25 N
B
100 N
C
50 N
D
40 N
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Correct Option: C
Centripetal force,
F = ( \frac{mv^2}{r} )
= ( \frac{2 \times 10^2}{4} )
= ( \frac{200}{4} )= 50N
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