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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
If two equal forces of magnitude ‘P’ act at an angle ‘θ’, their resultant, will be

P tan θ/2
2P sin θ/2
2P cos θ/2
P cos θ/2

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Applied Mechanics and Graphic Statics
A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2A, the energy becomes

E/2
2E
E
4E

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Applied Mechanics and Graphic Statics
A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is

6.28 m/sec
1.57 m/sec
3.14 m/sec
1.00 m/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

0.042361111111111
0.12569444444444
0.043055555555556
0.084027777777778

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Applied Mechanics and Graphic Statics
The mechanical advantage of an ideal machine is 100. For moving the local through 2 m, the effort moves through

2 m
20 m
0.02 m
2.5 m

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Applied Mechanics and Graphic Statics
For a self-locking machine, the efficiency should be

Less than 60%
None of these
0.5
More than 50%

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