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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
At a given instant ship ‘A’ is travelling at 6 km/h due east and ship ‘B’ is travelling at 8 km/h due north. The velocity of ‘B’ relative to ‘A’ is

2 km/hrs
7 km/hrs
10 km/hrs
1 km/hrs

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Applied Mechanics and Graphic Statics
The condition of equilibrium for any system of forces in a plane is

That polygon of forces must close
That resultant couple must be zero
None of these
Both (A) and (B)

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Applied Mechanics and Graphic Statics
The centre of gravity of the trapezium as shown in below figure from the side is at a distance of Applied Mechanics and Graphic Statics mcq question image

(h/2) × [(2b + a)/(b + a)]
(h/3) × [(b + 2a)/(b + a)]
(h/2) × [(b + 2a)/(b + a)]
(h/3) × [(2b + a)/(b + a)]

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Applied Mechanics and Graphic Statics
If the radius of the earth is 600 km the height of a mountain above sea level at the top of which a beat seconds pendulum at sea level, looses 27 seconds a day, is

2000 meters
1500 meters
500 meters
1000 meters

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Applied Mechanics and Graphic Statics
If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is

—rad/sec 20
—rad/sec 10
None of these
—rad/sec 30

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Applied Mechanics and Graphic Statics
Centre of gravity of a thin hollow cone lies on the axis of symmetry at a height of

None of these
One-third of the total height above base
One-half of the total height above base
One-fourth of the total height above base

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