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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

3mr²/5
4mr²/5
2mr²/5
3mr²/10

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Engineering Mechanics
On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

Away from the wall at its upper end
Downwards at its upper end
Upwards at its upper end
Towards the wall at its upper end

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Engineering Mechanics
The power developed by a body acted upon by a torque 'T' Newton meter (N - m) and revolving at ω radian/s is given by

T.ω/4500 (in kilowatts)
T.ω/60 (in watts)
T.ω (in watts)
T.ω/75 (in kilowatts)

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

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

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Engineering Mechanics
The total motion possessed by a body, is called

Mass
Momentum
Weight
Impulsive force

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Engineering Mechanics
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

40
10
20
5

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