Moments (AQA A-Level Physics): Quizzes

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Moments
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What is a moment in physics?

The turning effect of a force

What is the unit of measurement for a moment?

Newton-metres (NmNm)

What two factors does the magnitude of a moment depend on?

Force and perpendicular distance

What is a couple?

Two equal but opposite forces

How is the moment of a couple calculated?

Force × distance between the forces

What does the principle of moments state for equilibrium?

Clockwise moments = Anticlockwise moments

A couple creates what type of effect?

Rotational without linear force

Using (2×50)+(3×35)=3.5×F(2 \times 50) + (3 \times 35) = 3.5 \times F, what is FF in Newtons?

58.6 N58.6\,N

What is the centre of mass of an object?

Point where entire mass appears to act

Where is the centre of mass for a uniform object?

At its geometric centre

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