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After writing an exam paper on Sunday three boys K,H and J went to a carnival. There was a merry go round of radius R which was moving with uniform angular velocity $ω$ about a fixed axis. K and J went on to enjoy the ride and H decided to stand nearby. K and J sat on the edge of merry go round as shown in figure (i.e at distance R from the axis).Then choose the correct option (s) about their relative motion.

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Acceleration of K and J as observed by H are equal

Acceleration of H as observed by K and J are equal in magnitude

Acceleration of K as observed by H and J are equal in magnitude and direction

Acceleration of H as observed by K and J are zero each

answer is B.

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Detailed Solution

$\bar{a} = \bar{a'} + \bar{ω} \times (\bar{ω} \times \bar{r})$

The magnitude will be equal but direction will be different for J and K as observed by H.

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