If two forces acting at a joint are not along the straight line, then for the eq

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Question
If two forces acting at a joint are not along the straight line, then for the equilibrium of the joint
Options
A. one of the forces must be zero
B. each force must be zero
C. forces must be equal and of the same sign
D. forces must be equal in magnitude but opposite in sign.

Correct Answer

each force must be zero

Strength of Materials problems

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1. In a loaded beam, the point of con-traflexture occurs at a section where
Options
A. bending moment is minimum
B. bending moment is zero or changes sign
C. bending moment is maximum
D. shearing force is maximum
E. shearing force is minimum.

5. A simply supported beam carrying a uniformly distributed load over its whole span, is propped at the centre of the span so that the beam is held to the level of the end supports. The reaction of the prop will be
Options
A. half the distributed load
B. 3/8th the distributed load
C. 5/8th the distributed load
D. distributed load.
E. none of these.

6. The ratio of the moment of inertia of a circular plate and that of a square plate for equal depth, is
Options
A. less than one
B. equal to one
C. more than one
D. equal to 3?/16
E. none of these.

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