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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by

10.5 kg
6.25 kg
5.5 kg
8.75 kg

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Applied Mechanics and Graphic Statics
Coefficient of friction depends on

None of these
Area of contact only
Nature of surfaces only
Both (A) and (B)

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Applied Mechanics and Graphic Statics
Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is

40 kg
50 kg
30 kg
25 kg

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Applied Mechanics and Graphic Statics
A rope is wrapped twice around a rough pole with a coefficient of friction ‘A . It is subjected to a force Fj at one end and a gradually increasing force F2 is applied at the other end till the rope just starts slip-ping. At this instant the ratio of F2 to Fi is

e4*
1
e2*
e*72

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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

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

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Applied Mechanics and Graphic Statics
Power can be expressed as

Work/distance
Work/time
Work × time
Work/energy

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