Engineering Mechanics
Centre of gravity of a solid cone lies on the axis at the height

One-half of the total height above base
One third of the total height above base
One fourth of the total height above base
Three eighth of the total height above the base

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Engineering Mechanics
According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium, then

The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point
The algebraic sum of their moments about any point in their plane is zero
Their lines of action are at equal distances
Their algebraic sum is zero

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