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Engineering Mechanics

Engineering Mechanics
Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

Thrice
Four times
Twice
Same as

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Engineering Mechanics
The unit of angular acceleration is

m/s
m/s2
N-m
rad/s2

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

Zero
Minimum
Maximum
None of these

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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 = IG - Ah2
IP = Ah2 / IG

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Engineering Mechanics
The wheels of a moving car possess

Kinetic energy of translation only
Kinetic energy of rotation only
Potential energy only
Kinetic energy of translation and rotation both

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Engineering Mechanics
The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)

2π. √(kG² + h²/gh)
1/2π. √(kG² + h²/gh)
2π. √(gh/kG² + h²)
1/2π. √(gh/kG² + h²)

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