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Applied Mechanics and Graphic Statics

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

400 watts
4000 watts
None of these
500 watts

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Applied Mechanics and Graphic Statics
Time period and length of a second’s pendulum respectively are

2 sec and 92.7 cm
1 sec and 99.4 cm
2 sec and 99.4 cm
1 sec and 92.7 cm

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Applied Mechanics and Graphic Statics
A vehicle weighing w kg is to run on a circular curve of radius r. If the height of its centre of gravity above the road level is h and the distance between the centres of wheels is 2a, the maximum velocity, in order to avoid over turning, will be

4√(gra/h)
∛(gra/h)
gra/h
√(gra/h)

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

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Applied Mechanics and Graphic Statics
For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is

0.65
0.6
0.75
0.7

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Applied Mechanics and Graphic Statics
A weight of 100 kg is supported by a string whose ends are attached to pegs ‘A’ and ‘B’ at the same level shown in below figure. The tension in the string is

750 kg
50 kg
120 kg
100 kg

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