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A wheel is rolling on a plane surface. The speed of a particle on the h ighest point of the rim is 8 m/s. The speed of the particle on the rim of the wheel at the same level as the centre of wheel, will be

1. 8 2 m/s
2. 4 2 m/s
3. 8 m/s
4. 4 m/s

Correct answer: 4 2 m/s

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