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Two circles externally touch. The circumference of the larger one is 50cm and that of the smaller one is 10cm. The smaller circle starts rolling over the larger one. The smaller circle will complete 6 complete rotations to come to its initial state.Questions :-(i) Why it have to complete 6 rotations ? Why not 5 ?(ii) If the circumference ot the smaller circle is increased by 5cm, how many rotations does it require to come to its initial state ?
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