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Engineering Mechanics

Engineering Mechanics
The horizontal range of a projectile (R) is given by

R = u² cos2α/g
R = u² sinα/g
R = u² cosα/g
R = u² sin2α/g

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Engineering Mechanics
The rate of doing work is known as

None of these
Power
Potential energy
Kinetic energy

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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/A
r/2

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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

1 m
2 m
3 m
4 m

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Engineering Mechanics
The coefficient of restitution for inelastic bodies is

Zero
One
Between zero and one
More than one

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Engineering Mechanics
If ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,

P × m.a = 0
P/m.a = 0
P + m.a = 0
P - m.a = 0

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