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Engineering Mechanics

Engineering Mechanics
The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by

P + Q
P / Q
P - Q
Q / P

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Engineering Mechanics
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

Twice the area of the triangle
None of these
Area of the triangle
Half the area of the triangle

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Engineering Mechanics
A force while acting on a body may

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

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Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

2mr²/5
mr²/2
2mr²/3
mr²

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Engineering Mechanics
The velocity of a particle moving with simple harmonic motion is _________ at the mean position.

Maximum
Minimum
None of these
Zero

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Engineering Mechanics
If n = number of members and y = number of joints, then for a perfect frame, n = ?

43865
43892
43864
43832

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