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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is

0.5
0.55
0.4
0.3

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Applied Mechanics and Graphic Statics
The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is

Between 1 and 2
Greater than 2
Less than 1
Equal to 1

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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

4
3
1/3
1/4

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Applied Mechanics and Graphic Statics
The resultant of two forces acting at right angles is 5 kgf and if they act at an angle of 60°, it is 37 kgf. The magnitudes of the forces are:

5 kgf, 3 kgf
4 kgf, 5 kgf
3 kgf, 4 kgf
2 kgf, 3 kgf

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Applied Mechanics and Graphic Statics
The centre of gravity of a triangle is at the point where three

Medians of the triangle meet
None of these
Perpendicular bisectors of the sides of the triangle meet
Bisectors of the angle of the triangle meet

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Applied Mechanics and Graphic Statics
A 50 kg boy climbs up a 8 m rope in gymnasium in 10 sec. The average power developed by the boy is approximately

4000 watts
500 watts
400 watts
None of these

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