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Engineering Mechanics

Engineering Mechanics
The unit of angular acceleration is

m/s
rad/s2
m/s2
N-m

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is

bd³/12
db³/12
db³/36
bd³/36

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Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Center of percussion
Center of mass
Moment of inertia
Center of gravity

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Engineering Mechanics
A force while acting on a body may

Balance the forces, already acting on it
Give rise to the internal stresses in it
Change its motion
All of these

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Engineering Mechanics
A cable with a uniformly distributed load per horizontal meter run will take the following shape

Hyperbola
Elliptical
Parabola
Straight line

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Engineering Mechanics
The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as

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

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