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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Time of flight of a projectile on a horizontal plane, is

2u cosα/g
2u sinα/g
2u tanα/g
2u cotα/g

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Applied Mechanics and Graphic Statics
A projectile is thrown at an angle ‘α’ to the horizontal with velocity ‘v’. It will have the maximum centripetal acceleration

As it strikes the ground
At the start
Elsewhere
At the top of the trajectory

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Applied Mechanics and Graphic Statics
If two forces are in equilibrium, then the forces must(i) Be equal in magnitude(ii) Be opposite in sense(iii) Act along the same line

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

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Applied Mechanics and Graphic Statics
If the velocity of projection is 4 m/sec and the angle of projection is α°, the maximum height of the projectile from a horizontal plane, is

u² sin 2α/2g
u² sin² α/2g
u² cos² α/2g
u² tan² α/2g

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Applied Mechanics and Graphic Statics
A car goes round a curve of radius 100 m at 25 m/sec. The angle to the horizontal at which the road must be banked to prevent sideways friction on the car wheels is tan"1 x, where x is (Assume g = 10 m/sec²)

43959
43832
44079
43898

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Applied Mechanics and Graphic Statics
The beam shown in below figure is supported by a hinge at ‘A’ and a roller at ‘B’. The reaction RA of the hinged support ‘A’ of the beam, is

10.4 t
10.8 t
10.6 t
10.2 t

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