Multiple choice

A triangular-shaped cantilever beam of uniform-thickness is shown in the figure. The Young's modulus of the material of the beam is E. A concentrated load P is applied at the free end of the beam.

The area moment of inertia about the neutral axis of a cross-section at a distance x measured from the free end is

  1. $\frac{bxt^3}{6I}$
  2. $\frac{bxt^3}{12I}$
  3. $\frac{bxt^3}{24I}$
  4. $\frac{xt^3}{12}$
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B Correct answer
Explanation

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