Engineering Mechanics
The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is

(kG² + h²)/h²
h/(kG² + h²)
(kG² + h²)/h
h²/(kG² + h²)

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Engineering Mechanics
The term 'Centroid' is

The same as centre of gravity
None of the listed here
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 suspension

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Engineering Mechanics
Angle of friction is the

The ratio of minimum friction force to the friction force acting when the body is just about to move
Angle between normal reaction and the resultant of normal reaction and the limiting friction
Ratio of limiting friction and normal reaction
The ratio of minimum friction force to friction force acting when the body is in motion

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Engineering Mechanics
A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:

None of these
The change in momentum suffered by rubber ball is more than the lead ball
Both the balls undergo an equal change in momentum
The change in momentum suffered by rubber ball is less than the lead ball

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