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प्रश्न
A hollow sphere has a radius of 6.4 m. what is the minimum velocity required by a motorcyclist at the bottom to complete the circle.
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उत्तर
Minimum velocity required by a motorcyclist at the bottom to complete the circle, vmin = `sqrt(5rg)`
= `sqrt(5 xx 6.4 xx 9.8)`
= 17.7 m/s
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