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

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Engineering Mechanics
One joule means that

Work is done by a force of 1 N when it displaces a body through 1 m
Work is done by a force of 1 dyne when it displaces a body through 1 cm
Work is done by a force of 1 kg when it displaces a body through 1 m
Work is done by a force of 1 g when it displaces a body through 1 cm

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

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