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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A satellite is said to move in a synchronous orbit if it moves at an altitude of 36,000 km with a maximum velocity of about

8000 km per hour
7000 km per hour
11,000 km per hour
9000 km per hour

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Applied Mechanics and Graphic Statics
A marble ball is rolled on a smooth floor of a room to hit a wall. If the time taken by the ball in returning to the point of projection is twice the time taken in reaching the wall, the coefficient of restitution between the ball and the wall, is

0.50
0.25
1.0
0.75

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Applied Mechanics and Graphic Statics
A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kg.m² rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is

150 J
400 J
200 J
50 J

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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

19° 48'
18° 48'
17° 48'
20° 48'

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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 tension in the string is

22.5 kg
17.5 kg
19.5 kg
25 kg

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Applied Mechanics and Graphic Statics
The moment of inertia of a triangular section (base b, height h) about centroidal axis parallel to the base, is

bh³/2
bh³/3
bh³/36
b³h/12

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