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

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Applied Mechanics and Graphic Statics
A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is

8
8TC
4
6 7i

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Applied Mechanics and Graphic Statics
The total time of collision and restitution of two bodies, is called

Time of collision
Period of collision
All listed here
Period of impact

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Applied Mechanics and Graphic Statics
To double the period of oscillation of a simple pendulum

The mass of its bob should be quadrupled
Its length should be doubled
The mass of its bob should be doubled
Its length should be quadrupled

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Applied Mechanics and Graphic Statics
Maximum efficiency of a screw jack for the angle of friction θ, is

(1 - sin θ)/sin θ
(1 + sin θ)/(1 - sin θ)
sin θ/(1 + sin θ)
(1 - sin θ)/(1 + sin θ)

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Applied Mechanics and Graphic Statics
The displacement of a particle which moves along a straight line is given by S = 4t³ + 3t²- 10 where ‘S’ is in meters and t is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is

1.5 sec
½ sec
1.2 sec
1 sec

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