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Engineering Mechanics

Engineering Mechanics
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

60° + β/2
β/2
30° + β/2
45° + β/2

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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

Iω
0.5 Iω2
Iω2
0.5 Iω

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Engineering Mechanics
If the gravitational acceleration at any place is doubled, then the weight of a body will be

g
2g
√2.g
g/2

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Engineering Mechanics
The bodies which rebound after impact are called

Elastic bodies
Neither elastic nor inelastic bodies
Inelastic bodies
None of these

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Engineering Mechanics
When a body falls freely under gravitational force, it possesses __________ weight.

Minimum
None of these
No
Maximum

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Engineering Mechanics
The moment of inertia of a thin rod of mass 'm' and length 'l', about an axis through its centre of gravity and perpendicular to its length is

ml2/8
ml2/ 6
ml2/12
ml2/4

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