A rod AB moves towards the origin O of a fixed rectangu lar co-ordinate system, always perpendicu lar to the bisector of the angle XOY, witha velocity v. the speed of end B with respect to O will be.

A rod AB moves towards the origin O of a fixed rectangu lar co-ordinat

1.	A rod AB moves towards the origin O of a fixed rectangu lar co-ordinate system, always perpendicu lar to the bisector of the angle XOY, witha velocity v. the speed of end B with respect to O will be.
Answer» v 2v `(V)/(2)` `SQRT(2v)` Solution :SPEED of end B is v' where `v' cos 45^(@)=v` `v'=sqrt(2)v`