Two balls A and B of masses 1 kg each are connected by an inextensible massless string. The system is resting on a smooth horizontal surface. An impulse of 10 {Ns} is applied to the ball {A} at an angle 30^{\circ} with the line joining two balls in horizontal direction as shown in the figure. Assuming that the string remains taut after the impulse, if the magnitude of kinetic energy of ball {A} is \frac{175}{ {k}} . Find the value of {K}.

JEE Advanced 2020 Full Test 4 Paper 1

Question : 14 of 54

Marks: +1, -0

Two balls A and B of masses 1 kg each are connected by an inextensible massless string. The system is resting on a smooth horizontal surface. An impulse of 10Ns is applied to the ball A at an angle 30∘ with the line joining two balls in horizontal direction as shown in the figure. Assuming that the string remains taut after the impulse, if the magnitude of kinetic energy of ball A is ‌

175

. Find the value of K.

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