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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The angle which an inclined surface makes with the horizontal when a body placed on it is on the point of moving down, is called

Angle of inclination
Angle of friction
Angle of repose
None of these

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Applied Mechanics and Graphic Statics
A body A of mass 6.6 kg which is lying on a horizontal platform 4.5 m from its edge is connected to the end of a light string whose other end is supporting a body of mass 3.2 kg as shown in below figure. If the friction between the platform and the body A is 1/3, the acceleration is

1.00 m/sec²
0.75 m/sec²
1.25 m/sec²
0.5 m/sec²

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Applied Mechanics and Graphic Statics
Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is

2 sec
5 sec
4 sec
3 sec

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Applied Mechanics and Graphic Statics
The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by

0.084027777777778
0.12569444444444
0.043055555555556
0.042361111111111

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Applied Mechanics and Graphic Statics
For perfectly elastic bodies, the value of coefficient of restitution is

0.5
Zero
Between 0 and 1
1

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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

0.7
0.6
0.65
0.75

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