after collision vel of m = vo/3
hence impulse on m by dumbbell= 2mvo/3
hence m exerts same impulse on dumbbell
angular impulse abt cm = chang in ang momentum of dumbbell abt com = 2mvo/3 x l/2 = mvol/3
after collision vel of m = vo/3
hence impulse on m by dumbbell= 2mvo/3
hence m exerts same impulse on dumbbell
angular impulse abt cm = chang in ang momentum of dumbbell abt com = 2mvo/3 x l/2 = mvol/3