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Engineering Mechanics

Engineering Mechanics
Moment of inertia of a circular section about its diameter (d) is

πd3/16
πd3/32
πd4/32
πd4/64

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

Maximum
Minimum
No
None of these

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Engineering Mechanics
The forces, which meet at one point, but their lines of action do not lie in a plane, are called

Non-coplanar non-concurrent forces
Intersecting forces
Coplanar non-concurrent forces
Non-coplanar concurrent forces

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Engineering Mechanics
The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

None of these
2π. √(l/g)
(1/2π). √(g/l)
(1/2π). √(l/g)

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

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

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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.

None of these
Decrease
Not be effected
Increase

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