The condition of apparent weightlessness can be created momentarily when a plane flies over the top of a vertical circle. At a speed of 900 $kmh^{- 1}$, the radius of the vertical circle that the pilot must use is

Question

Dr. Abubacker · Accepted Answer

(c) Here, $v = 900\ km{\ h}^{- 1} = \frac{900 	imes 1000}{60 	imes 60} = 250\ ms^{- 1}$
$g = 9.8\ ms^{- 2}$
For apparent weightlessness, $\frac{mv^{2}}{r} = mg$
$r = \frac{v^{2}}{g} = \frac{250 	imes 250}{9.8}$
$= 6377.5\ m = 6.4\ km$

Q. The condition of apparent weightlessness can be created momentarily when a plane flies over the top of a vertical circle. At a speed of 900 $kmh^{- 1}$, the radius of the vertical circle that the pilot must use is

Explanation

Reviewed by Dr. Abubacker

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