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SIR, A BULLET OF MASS 10g AND SPEED 500 m/sIS FIRED INTO A DOOR AND GETS EMBEDDED EXACTLY AT THE CENTRE OF THE DOOR.THE ROAD IS 1m WIDE AND WEIGHS 12kg.IT IS HINGED AT ONE END AND ROTATES ABOUT A VERTICAL AXIS PRACTICALLY WITHOUT FRICTION.FIND THE ANGULAR SPEED OF THE DOOR JUST AFTER THE BULLET EMBEDS INTO IT.
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Moderation Team
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