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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The centre of gravity of a plane lamina will not be at its geometrical centre if it is a

Rectangle
Equilateral triangle
Circle
Right angled triangle

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Applied Mechanics and Graphic Statics
The torque produced by a force depends oni. the magnitude of the forceii. the direction of the forceiii. the point of application of the force relative to originThe correct answer is

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

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Applied Mechanics and Graphic Statics
The maximum frictional force which comes into play, when a body just begins to slide over the surface of a another body, is known

Rolling friction
Limiting friction
Sliding friction
None of these

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Applied Mechanics and Graphic Statics
Instantaneous center is at infinity when the angular velocity is

Maximum
Zero
Minimum
Constant

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Applied Mechanics and Graphic Statics
The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

12.88 m/sec
8.88 m/sec
10.88 m/sec
5.88 m/sec

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Applied Mechanics and Graphic Statics
A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ?i. 1.0 in from the wallii. 1.732 m from the walliii. 1.0 m above the flooriv. 1.732 m above the floorThe correct answer is

(i) and (iv)
(ii) and (iii)
(i) and (iii)
(ii) and (iv)

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