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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Effect of a force on a body depends upon its

Direction
All of these
Position
Magnitude

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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

0.75
0.6
0.7
0.65

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Applied Mechanics and Graphic Statics
The torque produced by a force depends on i. the magnitude of the force ii. the direction of the force iii. the point of application of the force relative to origin The correct answer is

all (i), (ii) and (iii)
both (i) and (iii)
both (i) and (ii)
only (i)

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Applied Mechanics and Graphic Statics
For a non-concurrent force system to be in equilibrium

Both force polygon and funicular polygon must close
Only the closure of funicular polygon is sufficient
None of these
Only the closure of force polygon is sufficient

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Applied Mechanics and Graphic Statics
A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is

4
43834
43833
3

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Applied Mechanics and Graphic Statics
A flywheel of moment of inertia 20 kg.m is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian per second is

43832
43892
2
3

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