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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A bullet weighing 10 gm moves with a velocity of l km/sec. Its kinetic energy is (i) 5000 Nm (ii) 5000 kg.m (iii) 5000 J

All (i), (ii) and (iii)
Both (ii) and (iii)
Only (ii)
Both (i) and (iii)

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Applied Mechanics and Graphic Statics
A ball is dropped from a height of 16 m on a horizontal floor. If it rebounds to a height of 9 m after striking the floor, the coefficient of restitution between ball and floor is

43894
43924
43864
43834

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Applied Mechanics and Graphic Statics
In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

30
80
50
60

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Applied Mechanics and Graphic Statics
Rate of change of angular momentum is equal to

Torque
Force
Linear momentum
Impulse

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Applied Mechanics and Graphic Statics
The torque produced by a force depends on i. the magnitude of the force ii. the direction of the force iii. the point of application of the force relative to origin The correct answer is

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

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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

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

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