A pilot flies a small plane in a vertical loop of radius r . At the to – McqOptions

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1.	A pilot flies a small plane in a vertical loop of radius r . At the top of its trajectory he experiences weightlessness. If the acceleration due to gravity is g , the speed of the plane at the top of its trajectory would be
A.	zero
B.	infinite
C.	gr
D.	2 gr .
Answer» D. 2 gr .

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