A coin is place at a distance 9 cm from centre on a rotating turn table slip. If the angular velocity of the turn table is tripled, then the distance
A coin is place at a distance 9 cm from centre on a rotating turn table slip. If the angular velocity of the turn table is tripled, then the distance ofn the coin from the centre will be
A. 9 cm
B. 3cm
C. 1.5 cm
D. 1 cm
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Correct Answer - D
`r_(2) omega_(2)^(2)=r_(1) omega _(1)^(2)`
`r2=r_(1)omega_(1)^(2)/(omega_(2)^(2))=(9xxomega_(1)^(2))/(9 omega_(1)^(2))=1 cm`
`r2=1cm`.
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