Practice Quiz

MTEL Technology and Engineering

Category - Tech and Engineering

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A winch is being used to raise a beam to an upper floor of a building under construction. The primary force on the winch's cable is:
  1. Shear.
  2. Compression.
  3. Tension.
  4. Torsion.
Explanation
Correct Response: C. The primary forces on a winch cable are the two opposite collinear forces that tend to stretch the cable. This type of force is called tension. Since the cable is being pulled uniformly, there are no shear (A) forces acting in parallel but opposite non-collinear directions. Since the ends of the cable are pulled outward and not pushed inward, there is no compression (B). Since there is no twisting action on the cable, it is not undergoing torsion (D).
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