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Engineering Mechanics

Engineering Mechanics
The resultant of two equal forces ‘P’ making an angle ‘θ’, is given by

2P tanθ/2
2P cosθ/2
2P cotθ/2
2P sinθ/2

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Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Equal to the moment of the couple
Both of above are correct
Constant
Both of above are wrong

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

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Engineering Mechanics
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

2mr²/3
3mr²/5
mr²/3
2mr²/5

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Engineering Mechanics
The units of moment of inertia of mass are

m²/kg
kg/m
kg/m²
kg-m²

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Engineering Mechanics
The law of motion involved in the recoil of gun is

None of these
Newton's third law of motion
Newton's second law of motion
Newton's first law of motion

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MORE MCQ ON Engineering Mechanics

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