Turning moments

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  1. Another word for a turning force is called its moment
  2. Force
    An action that stretches/ compresses an object, or cause it to slow down, speed up or change its direction of motion.
  3. Pivot/ fulcrum
    The point at which an object turns
  4. Handle
    The place from which a force is exerted by your hands
  5. How do I calculate the moment?
    MOMENT = FORCE PERPENDICULAR DISTANCE FROM PIVOT
  6. moments are measured in…
    Newton metres, Nm
  7. Force is measured in…
    Newtons, N
  8. Perpendicular distance from pivot is measured in…
    metres, m
  9. How do I increase the moment?
    You can increase the moment you exert- or produce the same moment with a smaller force- by moving the force as far away from the pivot as possible.
  10. Give examples of how moments are increased.
    A door ( handle placed as far away from the hinges as possible)

    Nutcrackers (long handles so that a smaller force will crack the nut)

    Bottle opener (a long top will decrease the amount of force needed)
  11. For a seesaw to be in equilibrium (balanced) the anticlockwise moment must be equal to the clockwise moment. This is called the PRINCIPLE OF MOMENTS. How do I work out the principle of moments?
    • FORCE ON LEFT X PERPENDICULAR DISTANCE FROM PIVOT 
    • = FORCE ON RIGHT X PERPENDICULAR DISTANCE FROM PIVOT
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ID
320695
Card Set
Turning moments
Description
science
Updated
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