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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
When a body moves round a fixed axis, it has

A rotary motion and translatory motion
A translatory
A circular motion
A rotary motion

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Applied Mechanics and Graphic Statics
The resultant of two forces acting at right angles is 5 kgf and if they act at an angle of 60°, it is 37 kgf. The magnitudes of the forces are:

2 kgf, 3 kgf
5 kgf, 3 kgf
3 kgf, 4 kgf
4 kgf, 5 kgf

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Applied Mechanics and Graphic Statics
On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts

Zero at its upper end
Perpendicular to the wall at its upper end
Upwards at its upper end
Downwards at its upper end

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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

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

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Applied Mechanics and Graphic Statics
If a particle moves with a uniform angular velocity ‘ω’ radians/sec along the circumference of a circle of radius ‘r’, the equation for the velocity of the particle, is

v = ω √(r² + y²)
v = ω √(y² - r²)
y = ω √(y - r)
v = ω √(r² - y²)

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Applied Mechanics and Graphic Statics
Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is

1/3
2/3
3/5
1/5

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