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

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Question: What is the formula for calculating the moment of inertia for a rectangular section?

Options:

  1. bh^3/12
  2. bh^2/12
  3. b^3h/12
  4. b^2h/12

Correct Answer: bh^3/12

Solution: 

The moment of inertia I for a rectangular section is calculated as I = bh^3/12, where b is the base and h is the height.

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

Practice Questions

Q1
What is the formula for calculating the moment of inertia for a rectangular 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 section?
  • Step 1: Identify the base (b) of the rectangular section. This is the width of the rectangle.
  • Step 2: Identify the height (h) of the rectangular section. This is how tall the rectangle is.
  • Step 3: Cube the height (h) by multiplying it by itself three times (h * h * h).
  • Step 4: Multiply the base (b) by the cubed height (h^3) from Step 3.
  • Step 5: Divide the result from Step 4 by 12. This gives you the moment of inertia (I).
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