Two racing cars of masses $m_{1}$ and $m_{2}$ are moving in circles of radii $r$ and $2 r$ respectively; their angular speeds are equal. The ratio of the time taken by cars to complete one revolution is

m_{1} : m_{2}

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1 : 2

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1 : 1

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m_{1} : 2 m_{2}

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Solution

The correct option is D 1 : 1
$T = 2 π / ω$
Given, $ω_{1} = ω_{2}$
$⟹ T_{1} = T_{2}$

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Q. Two cars having masses

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