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QLDEngineeringQuick questions
Unit 3: Civil structures
Quick questions on Moments and support reactions for QCE Engineering Unit 3
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the moment of a force?Show answer
A force applied at a distance from a pivot tends to rotate the body. That turning effect is the moment:
What are the principle of moments?Show answer
For a body in rotational equilibrium, the total clockwise moment about any point equals the total anticlockwise moment, which is the same as saying:
What is not checking with a second moment equation?Show answer
Taking moments about the other support is a free check that catches arithmetic slips before they propagate.
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