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Law of Conservation of Mechanical Energy

A car is movi...

Question

A car is moving with uniform speed over a circular bridge of radius R which subtends an angle of $90^{0}$ at its centre. Find the minimum possible speed so that the car can cross the bridge without losing the contact any where.

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Solution

$∴ F_{e} = m g \frac{m V_{m a x}^{2}}{R} = m g V_{m a x} = \sqrt{g R}$

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