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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
In a lifting machine a weight of 5 kN is lifted through 200 mm by an effort of 0.1 kN moving through 15 m. The mechanical advantage and velocity ratio of the machine are respectively

50 and 75
75 and 50
75 and 75
50 and 50

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Applied Mechanics and Graphic Statics
The unit of Moment of Inertia of a body, is

m
m⁴
m²
m³

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

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

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Applied Mechanics and Graphic Statics
A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about (Assume g = 10 m/sec²)

43832
43835
43834
43833

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Applied Mechanics and Graphic Statics
A particle moving with a simple harmonic motion, attains its maximum velocity when it passes

None of these
Through a point at half amplitude
The extreme point of the oscillation
Through the mean position

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Applied Mechanics and Graphic Statics
If a projectile is fired with an initial velocity of 10 m/sec at an angle of 60° to the horizontal, its horizontal and vertical velocity at the highest point of trajectory are

5√3 m/sec and 0
5 and 5√3 m/sec
0 and 5 m/sec
5 m/sec and 0

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