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Question

The expressions for the tangential and centripetal acceleration in a circular motion are

A
rα and ω2r
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B
ω2r and rα
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C
ωr and rα
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D
rα and ωr
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Solution

The correct option is A rα and ω2r
stan=rθ
vtan=rω
atan=rα
centripetal acceleration = mv2tanr
since vtan=rω
centripetal acceleration = rω2

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