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

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

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Strength of Materials
According to principle of transmissibility of forces, the effect of a force upon a body is

Different at different points in its line of action
Maximum when it acts at the center of gravity of a body
The same at every point in its line of action
Minimum when it acts at the C.G. of the body

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Strength of Materials
According to Lami's theorem

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
Three forces acting at a point will be in equilibrium

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