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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is

2n rpm
n rpm
n/2 rpm
n/4 rpm

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Applied Mechanics and Graphic Statics
If a particle moves with a uniform angular velocity ‘ω’ radians/sec along the circumference of a circle of radius ‘r’, the equation for the velocity of the particle, is

v = ω √(r² - y²)
y = ω √(y - r)
v = ω √(r² + y²)
v = ω √(y² - r²)

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Applied Mechanics and Graphic Statics
The units of moment of inertia of an area are

kg/m
kg/m2
m4
m3

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Applied Mechanics and Graphic Statics
A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is

100 N
60 N
80 N
120 N

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Applied Mechanics and Graphic Statics
A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is

20 m/sec
22 m/sec
18 m/sec
16 m/sec

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Applied Mechanics and Graphic Statics
A satellite goes on moving along its orbit round the earth due to

Gravitational force
Centripetal force
Centrifugal force
None of these

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