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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is

5 sec
3 sec
4 sec
2 sec

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Applied Mechanics and Graphic Statics
The dimensions of power are.

M’L’T3
M’L2T2
M’L’r2
M’L-‘T*

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Applied Mechanics and Graphic Statics
A bullet weighing 10 gm moves with a velocity of l km/sec. Its kinetic energy is
(i) 5000 Nm
(ii) 5000 kg.m
(iii) 5000 J

Only (ii)
Both (i) and (iii)
All (i), (ii) and (iii)
Both (ii) and (iii)

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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 torque produced by a force depends on i. the magnitude of the force ii. the direction of the force iii. the point of application of the force relative to origin The correct answer is

both (i) and (ii)
only (i)
both (i) and (iii)
all (i), (ii) and (iii)

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Applied Mechanics and Graphic Statics
The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

12.88 m/sec
8.88 m/sec
10.88 m/sec
5.88 m/sec

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