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A trolley wire has a mass of 1.2 kg per meter and is stretched between two poles that are 20 meters apart. If the horizontal tension in the wire is 1500 kg, what is the sag at the midpoint of the span?

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Subject
Strength of Materialscivil-engineering-mcqs › strength-of-materials
Published
15 Jan 2019
Last updated
28 May 2026

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Explanation

Given the wire's weight per unit length and the horizontal tension, the sag or dip at the center of the span can be calculated using the formula for sag in a uniformly loaded cable. The correct sag value is 4.0 centimeters.

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  2. 2.What is the standard SI unit used to measure work or energy?
  3. 3.Identify the option that is not a unit used to measure pressure.
  4. 4.What is the term for forces that intersect at a single point but whose lines of action are not confined to the same plane?
  5. 5.Identify the quantity below that is not classified as a scalar.
  6. 6.Two forces act at different angles and produce different resultant magnitudes: when perpendicular, their resultant is √10 kg, and when the angle between them is 60°, the resultant measures √13 kg. What are the magnitudes of these two forces?
  7. 7.What is formed when two equal, parallel forces act in opposite directions but are not along the same line?
  8. 8.What does the law of the triangle of forces state?
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