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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis, is

237.5 cm⁴
337.5 cm⁴
137.5 cm⁴
437.5 cm⁴

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Applied Mechanics and Graphic Statics
The locus of the instantaneous centre of a moving rigid body, is

Centroid
Straight line
Involute
Spiral

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Applied Mechanics and Graphic Statics
Coefficient of friction depends on

Nature of surfaces only
Both (A) and (B)
Area of contact only
None of these

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Applied Mechanics and Graphic Statics
A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

50 m/sec
30 m/sec
40 m/sec
20 m/sec

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Applied Mechanics and Graphic Statics
A weight of 100 kg is supported by a string whose ends are attached to pegs ‘A’ and ‘B’ at the same level shown in below figure. The tension in the string is

120 kg
50 kg
100 kg
750 kg

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Applied Mechanics and Graphic Statics
A particle moves in a straight line and its position is defined by the equation x = 6 t² - t3 where t is expressed in seconds and ‘x’ in meters. The maximum velocity during the motion is

6 m/sec
12 m/sec
24 m/sec
48 m/sec

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