Engineering Mechanics
A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span

3.0 cm
2.5 cm
4.0 cm
5.0 cm

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Engineering Mechanics
Which of the following statement is correct in connection with projectiles?

The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.
All of these
The velocity, with which a projectile is projected, is known as the velocity of projection.
A path, traced by a projectile in the space, is known as trajectory.

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Engineering Mechanics
The loss of kinetic energy during inelastic impact, is given by (where m1 = Mass of the first body,m2 = Mass of the second body, and u1 and u2 = Velocities of the first and second bodies respectively.)

[m₁ m₂/2(m₁ + m₂)] (u₁² - u₂²)
[2(m₁ + m₂)/m₁ m₂] (u₁ - u₂)²
[2(m₁ + m₂)/m₁ m₂] (u₁² - u₂²)
[m₁ m₂/2(m₁ + m₂)] (u₁ - u₂)²

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