Engineering Mechanics
A force while acting on a body may

Give rise to the internal stresses in it
Change its motion
Balance the forces, already acting on it
All of these

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Engineering Mechanics
Coplanar concurrent forces are those forces which

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

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