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Consider two masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their speeds are such that they complete circular motion in the same time t. The ratio of their untripetal acceleration is,
A .  m1 : m2
B .  r1 : r2
C .  1 : 1
D .  m1 r1   : m2r2
Answer: Option B
Centripetal acceleration,
a = w2 r = (2πT)2. r
a1a2 = r1r2

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