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3.6.3 Turning effect of forces (A-level only)

Card 1 of 23

Moment: [...]\text{[...]}[...], where ddd is perpendicular to the line of action. Its SI unit is N m.

A

For a force at angle θ\thetaθ, the perpendicular distance is d=rsin⁡θ\boxed{d=r\sin\theta}d=rsinθ​, giving the moment M=Frsin⁡θM=Fr\sin\thetaM=Frsinθ.

B

The moment doubles.

C

203 N m20\sqrt3\text{ N m}203​ N m.

D

Moment: M=Fd\boxed{M=Fd}M=Fd​, where ddd is perpendicular to the line of action. Its SI unit is N m.

Card 1 of 23

3.6.3 Turning effect of forces (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /3.6.3 Turning effect of forces (A-level only)

23 flashcards on OCR (MEI) A Level Maths 3.6.3 Turning effect of forces (A-level only): the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.

Flashcards