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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Energy may be defined as

Capacity of doing work
All listed here
Rate of doing work
Power of doing work

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Applied Mechanics and Graphic Statics
Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis?

Disc with larger density
Both discs will have same rotational inertia
None of these
Disc with smaller density

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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

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

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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

1500 meters
2000 meters
500 meters
1000 meters

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Applied Mechanics and Graphic Statics
A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

30 m/sec
40 m/sec
20 m/sec
50 m/sec

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Applied Mechanics and Graphic Statics
A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is

1/3
4
1/4
3

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