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NEET 2002 Physics question

PhysicsSystems of Particles and Rotational MotionNEET 2002

A rod of length is 3m and its mass acting per unit length is directly proportional to distance x from one of its end then its centre of gravity from that end will be at :

Answer: (2)

Solution

Linear density , so an element of length at distance has mass . $ = = =

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Question ID VK-088963