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Applied Mechanics and Graphic Statics

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 tan² α/2g
u² cos² α/2g
u² sin² α/2g

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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

0.75
0.25
1.0
0.50

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Applied Mechanics and Graphic Statics
A stone is thrown up a slope of inclination 60° to the horizontal. At what angle to the slope must the stone be thrown so as to land as far as possible from the point of projection ?

75°
45°
30°
15°

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Applied Mechanics and Graphic Statics
If the linear velocity of a point on the rim of a wheel of 10 m diameter, is 50 m/sec, its angular velocity will be

10 rad/sec
20 rad/sec
5 rad/sec
20 rad/sec

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

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Applied Mechanics and Graphic Statics
The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis, is

437.5 cm⁴
237.5 cm⁴
137.5 cm⁴
337.5 cm⁴

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