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Engineering Mechanics

Engineering Mechanics
One kg force is equal to

12 N
8.9 N
9.8 N
7.8 N

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

Maximum
Minimum
Zero
None of these

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Engineering Mechanics
The ratio of limiting friction and normal reaction is known as

Sliding friction
Angle of friction
Coefficient of friction
Angle of repose

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Engineering Mechanics
The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.)

t = 2u sin (α + β)/g cos β
t = g cos β/2u sin (α + β)
t = g cos β/2u sin (α - β)
t = 2u sin (α - β)/g cos β

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Engineering Mechanics
The total energy possessed by a system of moving bodies

Varies from point to point
Is maximum in the start and minimum at the end
Is minimum in the start and maximum at the end
Is constant at every instant

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Engineering Mechanics
A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction.

Increase
Not be effected
Decrease
None of these

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