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Applied Mechanics and Graphic Statics

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

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Applied Mechanics and Graphic Statics
The angle of projection at which the horizontal range and maximum height of a projectile are equal to

36°
76°
45°
56°

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Applied Mechanics and Graphic Statics
Engineer's units of force, is

Newton in absolute units
Dyne in absolute units
All listed here
Newton and dyne in absolute units

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Applied Mechanics and Graphic Statics
A train weighing 196 tonnes experiences a frictional resistance of 5(11/22) per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is

5 √10 m/sec
5 √3 m/sec
3 √5 m/sec
10 √5 m/sec

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Applied Mechanics and Graphic Statics
A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are

1436.2 kN and 1500 kN
1436.2 kN and 1250 kN
1346.3 kN and 1500 kN
1346.3 kN and 1250 kN

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Applied Mechanics and Graphic Statics
To double the period of oscillation of a simple pendulum

Its length should be quadrupled
The mass of its bob should be quadrupled
The mass of its bob should be doubled
Its length should be doubled

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