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Two blocks A and B are joined by means o...

Two blocks A and B are joined by means of a slacked string passing over a massiess pulley as shown in diagam. The system is released from rest and it becouse taut when B falls a distance 0.5 m, then
(a) find the common velcoity of two blocks just after string become taut.
(b) Find the magnitude of impulse on the pulley by tyhe clamp during the small interval while string becomes taut

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