Engineering Board Exam Reviewer · Strength of Materials · medium

A cantilever beam 3 m long (EI = 15000 kN· m2) carries a concentrated load of 10 kN at its free end. What is the deflection at the free end, in mm?

  1. 0.38
  2. 2.25
  3. 18
  4. 6

Answer

D. 6

Solution

For a cantilever with an end load, = PL3/(3EI) = (10)(3)3/(3 × 15000) = 0.006 m = 6 mm.

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