Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG / Ah2
IP = IG + Ah2
IP = Ah2 / IG
IP = IG - Ah2

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Engineering Mechanics
Non-coplanar non-concurrent forces are those forces which

None of these
Meet at one point, but their lines of action do not lie on the same plane
Do not meet at one point and their lines of action do not lie on the same plane
Do not meet at one point but their lines of action lie on the same plane

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Engineering Mechanics
The static friction

Always acts in a direction, opposite to that in which the body tends to move
Is independent of the area of contact, between the two surfaces
All of these
Bears a constant ratio to the normal reaction between the two surfaces

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