FIgure shows a sphere of mass $500\ g$ moving in a steady flow of air in the $x- $ direction. The air-stream exerts an essentially constant force of $0.9\ N$ on the sphere in the $x-$ direction. If at $t = 0$ the sphere is moving a s shown in the figure, determine the time required for the sphere to cross the $y-$ axis again ........ $\sec$
FIgure shows a sphere of mass $500\ g$ moving in a steady flow of air in the $x- $ direction. The air-stream exerts an essentially constant force of $0.9\ N$ on the sphere in the $x-$ direction. If at $t = 0$ the sphere is moving a s shown in the figure, determine the time required for the sphere to cross the $y-$ axis again ........ $\sec$
- A
$1.66$
- B
$2.66$
- C
$3.66$
- D
$4.66$
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- [KVPY 2011]
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