Strength of Materials
Center of gravity of a solid cone lies on the axis at the height

three-eighth of the total height above the base
one-third of the total height above base
one-fourth of the total height above base
one-half of the total height above base

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Strength of Materials
In actual machines

mechanical advantage is less than velocity ratio
mechanical advantage is greater than velocity ratio
mechanical advantage is equal to velocity ratio
mechanical advantage is unity

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Strength of Materials
According to Lami's theorem

Three forces acting at a point will be in equilibrium
If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
Three forces acting at a point can be represented by a triangle, each side being proportional to force

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Strength of Materials
Which one of the following statements is not correct

the angle of repose is equal to angle of friction
the tangent of the angle of repose is equal to coefficient of friction
the tangent of the angle of friction is equal to coefficient of friction
the sine of the angle of repose is equal to coefficient to friction

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