A 10cm long rod AB moves with its ends on two mutually perpendicular straight lines OX and OY. If the end A be moving at the rate of \[2cm/\sec \], then when the distance of A from O is \[8cm\], the rate at which the end B is moving, is [SCRA 1996]

A 10cm long rod AB moves with its ends on two mutually perpendicular s

1.	A 10cm long rod AB moves with its ends on two mutually perpendicular straight lines OX and OY. If the end A be moving at the rate of \[2cm/\sec \], then when the distance of A from O is \[8cm\], the rate at which the end B is moving, is [SCRA 1996]
A.	\[\frac{8}{3}cm/\sec \]
B.	\[\frac{4}{3}cm/\sec \]
C.	\[\frac{2}{9}cm/\sec \]
D.	None of these
Answer» B. \[\frac{4}{3}cm/\sec \]

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A 10cm long rod AB moves with its ends on two mutually perpendicular straight lines OX and OY. If the end A be moving at the rate of \[2cm/\sec \], then when the distance of A from O is \[8cm\], the rate at which the end B is moving, is [SCRA 1996]

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