Two particles A and B each of mass m are attached by a light

Last updated: 6/9/2023

Two particles A and B each of mass m are attached by a light inextensible string of length 21 The whole system lies on a smooth horizontal table with B initially at a distance I from A The particle at end B is projected across the table with speed u perpendicular to AB Velocity of ball A just after the string is taut is ku where k is A IS B