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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
At a given instant ship ‘A’ is travelling at 6 km/h due east and ship ‘B’ is travelling at 8 km/h due north. The velocity of ‘B’ relative to ‘A’ is

10 km/hrs
2 km/hrs
1 km/hrs
7 km/hrs

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Applied Mechanics and Graphic Statics
A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is

2 J
6 J
4 J
8 J

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Applied Mechanics and Graphic Statics
Maximum efficiency of a screw jack for the angle of friction θ, is

(1 - sin θ)/sin θ
sin θ/(1 + sin θ)
(1 - sin θ)/(1 + sin θ)
(1 + sin θ)/(1 - sin θ)

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Applied Mechanics and Graphic Statics
The point about which combined motion of rotation and translation of a rigid body takes place, is known as

Instantaneous axis
Instantaneous centre
Virtual centre
Point of rotation

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Applied Mechanics and Graphic Statics
The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is

64 J
400 J
464 J
89 J

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Applied Mechanics and Graphic Statics
The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then,

P = R
None of these
P = Q
Q = R

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