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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Three forces which act on a rigid body to keep it in equilibrium. The forces must be coplanar and

Concurrent
None of these
Concurrent parallel
Parallel

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Applied Mechanics and Graphic Statics
The centre of gravity of the trapezium as shown in below figure from the side is at a distance of Applied Mechanics and Graphic Statics mcq question image

(h/2) × [(2b + a)/(b + a)]
(h/3) × [(2b + a)/(b + a)]
(h/2) × [(b + 2a)/(b + a)]
(h/3) × [(b + 2a)/(b + a)]

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Applied Mechanics and Graphic Statics
The equation of motion of a particle starting from rest along a straight line is x = t3 - 3l2 + 5. The ratio of the velocities after 5 sec and 3 sec will be

2
5
4
3

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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

None of these
Rolling friction
Sliding friction
Limiting friction

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Applied Mechanics and Graphic Statics
A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball ‘B’ on the table. If the impact is perfectly plastic, the velocity of the ball ‘B’ just after impact would be

Zero
None of these
10 m/sec
5 m/sec

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Applied Mechanics and Graphic Statics
A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2. Time required to traverse a distance of 1.5 m, is

30 sec
40 sec
15 sec
20 sec

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