Engineering Mechanics
The principle of transmissibility of forces states that, when a force acts upon a body, its effect is

Maximum, if it acts at the center of gravity of the body
Different at different points on its line of action
Same at every point on its line of action
Minimum, if it acts at the center of gravity of the body

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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 but their lines of action lie on the same plane
Do not meet at one point and their lines of action do not lie on the same plane

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