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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
When a body falls freely under gravitational force, it possesses

No weight
Maximum weight
No effect on its weight
Minimum weight

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Applied Mechanics and Graphic Statics
The practical units of work, is

Joule
Newton
Dyne
Erg

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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

Both (i) and (ii)
Only (i)
Both (i) and (iii)
All (i), (ii) and (iii)

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Applied Mechanics and Graphic Statics
If the resultant of two forces ‘P’ and ‘Q’ acting at an angle ‘θ’ makes an angle ‘α’ with ‘P’, then tan α equals

P sin θ/P + Q tan θ
Q sin θ/P + Q cos θ
P sin θ/P - Q cos θ
Q sin θ/P + Q sin θ

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Applied Mechanics and Graphic Statics
Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is

3/5
2/3
1/3
1/5

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Applied Mechanics and Graphic Statics
A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if

Floor is rough and the wall is smooth
Floor is smooth and the wall is rough
Floor and wall both are rough surfaces
Floor and wall both are smooth surfaces

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