7 - Second Moment of Area (Moment of Inertia)
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Practice Questions
Test your understanding with targeted questions
What is the formula for the moment of inertia of a rectangle?
💡 Hint: Think about the base and height of the rectangle.
Calculate the moment of inertia for a rectangular beam with dimensions 4 in (base) and 6 in (height).
💡 Hint: Use the standard formula.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the Moment of Inertia for a circle with a diameter of 4 in?
💡 Hint: Recall the standard formula for circles.
True or False: A larger Moment of Inertia indicates a beam is less resistant to bending.
💡 Hint: Think about what I represents.
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Challenge Problems
Push your limits with advanced challenges
A beam has a rectangular cross-section of 10 cm wide and 20 cm high. Calculate its Moment of Inertia about the neutral axis.
💡 Hint: Use the rectangle moment of inertia formula.
Determine the Moment of Inertia for a composite I-section beam where the flange is 5 cm wide and 2 cm thick and the web is 8 cm high and 1 cm thick. Calculate separately, then sum.
💡 Hint: Break down into flange and web, apply the rectangle formula.
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