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Engineering Mechanics

Engineering Mechanics
The matter contained in a body, is called

Impulsive force
Momentum
Weight
Mass

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Engineering Mechanics
The units of moment of inertia of mass are

kg-m²
kg/m²
kg/m
m²/kg

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Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Equal to
Greater than
None of these
Less than

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

Six times
Four times
Nine times
Two times

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Engineering Mechanics
The time of flight (t) of a projectile on a horizontal plane is given by

t = 2u. cosα/g
t = 2u. tanα/g
t = 2u. sinα/g
t = 2u/g.sinα

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Engineering Mechanics
When a body of mass moment of inertia 'I' (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is

0.5 Iω
0.5 Iω2
Iω2
Iω

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