Moments Diagrams (AQA A-Level Mathematics): Quizzes

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Moments Diagrams
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What is a moment?

The turning effect of a force

What is the formula for calculating a moment?

Force×Distance\text{Force} \times \text{Distance}

What type of distance is used when calculating moments?

Perpendicular distance from pivot

What turning effect does a force acting at the pivot have?

No turning effect

For a system in equilibrium, what must be true about moments?

Clockwise = anticlockwise moments

Where does the weight of a uniform plank act?

At the centre

In Problem 1, Jack has mass 35 kg and sits 2.0 m from pivot M. What is his moment about M?

35g×2.035g \times 2.0

Why take moments about point A in Problem 2?

To eliminate tension TAT_A

What is the usual positive direction convention for moments?

Clockwise

Which force on the see-saw diagram has an anticlockwise turning effect about P?

Force D

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