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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about (Assume g = 10 m/sec²)

43834
43835
43833
43832

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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 repose
Angle of inclination
None of these
Angle of friction

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Applied Mechanics and Graphic Statics
In a simple harmonic motion, the position of equilibrium is always

None of these
Neutral
Unstable
Stable

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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

0.6
0.7
0.65
0.75

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Applied Mechanics and Graphic Statics
When two forces, each equal to P, act at 90° to each other, then the resultant will be

P/√2
2P
P
P√2

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Applied Mechanics and Graphic Statics
On a mass ‘m’ describing a circular path of radius ‘r’, the centrifugal force

Acts away from the centre of rotation
Is mw2r/g kgf
Acts towards the centre of rotation
Acts tangentially to the circular path

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