Strength of Materials
Dynamic friction as compared to static friction is

less
more
same
may be less of more depending on nature of surfaces and velocity

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Strength of Materials
Which one of the following statements is not correct

the tangent of the angle of repose is equal to coefficient of friction
the tangent of the angle of friction is equal to coefficient of friction
the sine of the angle of repose is equal to coefficient to friction
the angle of repose is equal to angle of friction

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Strength of Materials
According to principle of transmissibility of forces, the effect of a force upon a body is

Maximum when it acts at the center of gravity of a body
The same at every point in its line of action
Minimum when it acts at the C.G. of the body
Different at different points in its line of action

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