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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

30
60
80
50

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Applied Mechanics and Graphic Statics
A string of length 90 cm is fastened to two points ‘A’ and ‘B’ at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force ‘P’ is applied to the ring such that it is in equilibrium vertically below ‘B’. The value of ‘P’ is:

60 g
100 g
40 g
80 g

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Applied Mechanics and Graphic Statics
If the horizontal range is 2.5 times the greatest height, the angle of projection of the projectile, is

59°
58°
60°
57°

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Applied Mechanics and Graphic Statics
If ‘α’ is the angular acceleration of a compound pendulum whose angular displacement is ‘θ’, the frequency of the motion is

2π √(α - θ)
4π √(α/θ)
2π √(α/θ)
(1/2π) √(α/θ)

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Applied Mechanics and Graphic Statics
Rate of change of angular momentum is equal to

Force
Torque
Linear momentum
Impulse

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

No effect on its weight
No weight
Minimum weight
Maximum weight

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