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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A flywheel of moment of inertia 20 kg.m is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian per second is

43892
2
43832
3

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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

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

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Applied Mechanics and Graphic Statics
In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

314
5
1.5
25

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Applied Mechanics and Graphic Statics
For a simple pendulum, time period for a beat, is

π √(g/2l)
π √(2l/g)
π √(l/2g)
π √(l/g)

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Applied Mechanics and Graphic Statics
A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is

20° 48'
17° 48'
18° 48'
19° 48'

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Applied Mechanics and Graphic Statics
A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is

0.25
0.5
0.33
0.4

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