What is the formula for calculating the moment of inertia for a rectangular beam

Practice Questions

Q1
What is the formula for calculating the moment of inertia for a rectangular beam section?
  1. bh^3/12
  2. bh^2/12
  3. b^3h/12
  4. b^2h/12

Questions & Step-by-Step Solutions

What is the formula for calculating the moment of inertia for a rectangular beam section?
  • Step 1: Identify the dimensions of the rectangular beam section. You need to know the width (b) and the height (h) of the rectangle.
  • Step 2: Understand the formula for the moment of inertia. The formula is I = (b * h^3) / 12.
  • Step 3: Calculate h^3. This means you need to multiply the height (h) by itself three times (h * h * h).
  • Step 4: Multiply the width (b) by the result from Step 3 (b * h^3).
  • Step 5: Divide the result from Step 4 by 12 to get the moment of inertia (I).
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