Using Moments - Harder (Edexcel A-Level Mathematics): Flashcards
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Practise the cards
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What is a nonuniform rod in mechanics?
What is a nonuniform rod in mechanics?
A rod with varying mass distribution along its length.
Why might a nonuniform rod have an off-center mass?
Why might a nonuniform rod have an off-center mass?
Different thicknesses or materials affecting density.
What is the weight of rod AB in Problem 1?
What is the weight of rod AB in Problem 1?
The weight of rod AB is 6 N.
How far is the center of mass from A in Problem 1?
How far is the center of mass from A in Problem 1?
The center of mass is 2.4 m from A.
What is the method to find reactions at supports of a beam?
What is the method to find reactions at supports of a beam?
Use static equilibrium: sum forces and moments equal zero.
What is the total weight of the bar in Problem 2?
What is the total weight of the bar in Problem 2?
The weight of the bar is N.
What distance is the center of mass from in Problem 2?
What distance is the center of mass from in Problem 2?
The center of mass is m from .
What are the conditions for forces in equilibrium?
What are the conditions for forces in equilibrium?
The sum of all forces and moments must be zero.
How to simplify moment calculations?
How to simplify moment calculations?
Choose a pivot point where multiple unknowns act.
What must be resolved in sizing forces?
What must be resolved in sizing forces?
Resolve all forces into horizontal and vertical components.