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Engineering Mechanics

Engineering Mechanics
The unit of work in S.I. units is

joule
kg-m
Newton
erg

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Engineering Mechanics
The velocity ratio in case of an inclined plane inclined at angle 'θ' to the horizontal and weight being pulled up the inclined plane by vertical effort is

cosecθ
sinθ
tanθ
cosθ

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Engineering Mechanics
The centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.(where h = Height of a right circular solid cone.)

h/4
h/6
h/3
h/2

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Engineering Mechanics
A force while acting on a body may

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

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

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Engineering Mechanics
Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)

v = u + a.t
All of these
v2 = u2 + 2a.s
s = u.t + ½ a.t2

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