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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
Q / P
P + Q
P / Q

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Engineering Mechanics
The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

None of these
Equal to
Less than
Greater than

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG + Ah2
IP = Ah2 / IG
IP = IG - Ah2
IP = IG / Ah2

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Engineering Mechanics
The motion of a wheel of a car is

Purely rotational
Purely translation
Combined translation and rotational
None of the listed here

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

2mr²/3
mr²/2
mr²
2mr²/5

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Engineering Mechanics
If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

Less inclined when moving
Less inclined when standing
More inclined when standing
More inclined when moving

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