Strength of Materials
The center of gravity of a uniform lamina lies at

All of these
the mid point of its axis
the bottom surface
the center of heavy portion

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

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

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Strength of Materials
Center of percussion is

the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
the point of C.G.
the point of metacentre
point of suspension

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