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Q.

A rod of weight W is supported by two parallel knife edges A and B is in equilibrium in a horizontal position. The knives are at a distance d from each other. The center of mass of the rod is at distance x from A. The normal reaction on A is

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a

$\frac{W (d - x)}{d}$

b

$\frac{Wx}{d}$

c

$\frac{Wd}{x}$

d

$\frac{W (d - x)}{x}$

answer is A.

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