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Wires A and B are connected with blocks ...


Wires A and B are connected with blocks P and Q, as shown, the ratio of lengths radii and Young's modulus of wires A and B are r, 2r and 3r respectively (r is a constant). Find the mass of block P if ratio of increase in their corresponding length is `(1)/(6r^2)`. The mass of the block Q is 3M

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