A particle is moving in a circular path of radius 50cm with an uniform speed, completing one revolution in 10s. The magnitude of centripetal acceleration of the particle is
A
5π2cm/s2
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B
2π2m/s2
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C
2π2cm/s2
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D
5π2m/s2
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Solution
The correct option is C2π2cm/s2 Centripetal acceleration ac=rω2[∵v=rω]
To find ω: ω=2πT=2π10=π5rad/s ∴ac=50×10−2×π225m/s2=2π2cm/s2