Kelvi

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

medium
System of Particles and Rotational Motion
2015
physics
1. 

Wdx\frac{W d}{x}

2. 

W(d−x)x\frac{W (d - x)}{x}

3. 

W(d−x)d\frac{W (d - x)}{d}

4. 

Wxd\frac{W x}{d}

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