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Question

Physics Question on work, energy and power

A fighter plane is moving in a vertical circle of radius V. Its minimum velocity at the highest point A of the circle will be

A

3gr\sqrt{3gr}

B

2gr\sqrt{2gr}

C

gr\sqrt{gr}

D

gr/2\sqrt{gr/2}

Answer

gr\sqrt{gr}

Explanation

Solution

Minimum velocity at the highest point of vertical circle VA=grVA=\sqrt{gr}