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Engineering Mechanics

Engineering Mechanics
A particle inside a hollow sphere of radius r, having coefficient of friction µ can rest up to height of

r/3
0.134 r
r/2
r/A

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Engineering Mechanics
A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of

4 m
2 m
1 m
3 m

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

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

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Engineering Mechanics
A screw jack used for lifting the loads is

A reversible machine
None of these
An ideal machine
A non-reversible machine

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Engineering Mechanics
When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.

None of these
Directly proportional
Inversely proportional
Cube root

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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

mr²/3
2mr²/3
3mr²/5
2mr²/5

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