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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The angle of projection at which the horizontal range and maximum height of a projectile are equal to

76°
56°
45°
36°

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

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Applied Mechanics and Graphic Statics
A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is

90 m/sec
75 m/sec
80 m/sec
70 m/sec

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Applied Mechanics and Graphic Statics
One end of a light string 4 m in length is fixed to a point on a smooth wall and the other end fastened to a point on the surface of a smooth sphere of diameter 2.25 m and of weight 100 kg. The reaction between the sphere and the wall of the arrangement made is

110 kg
105.5 kg
102.5 kg
108.5 kg

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Applied Mechanics and Graphic Statics
A satellite moves in its orbit around the earth due to

Centripetal force
Gravitational force
None of these
Centrifugal force

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Applied Mechanics and Graphic Statics
On a mass ‘m’ describing a circular path of radius ‘r’, the centrifugal force

Acts tangentially to the circular path
Acts towards the centre of rotation
Is mw2r/g kgf
Acts away from the centre of rotation

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