___________
Science
Hidden forces

Starter quiz

  • The point at which a lever rotates called the ______.
    • 'pivot' ✓
  • Which of the following act as levers?
    • a wheelbarrow  ✓
    • scissors  ✓
    • springs
    • ropes
    • a steering wheel  ✓
  • Why is it easier to steer a bicycle with wide handlebars, like those shown, than one with narrower handlebars?
    Why is it easier to steer a bicycle with wide handlebars, like those shown, than one with narrower handlebars?
    • the grips will be better
    • the effort force will be further from the pivot  ✓
    • the effort force will be closer from the pivot
    • they are more aerodynamic
    • the pivot is closer to the centre
  • A lever that produces a larger load force than the effort force is called a force ______.
    • 'multiplier' ✓
  • Why does a spanner acts as a force multiplier?
    Why does a spanner acts as a force multiplier?
    • The grip holds the bolt tightly so it does not slip.
    • The effort force is further from the pivot than the load force.  ✓
    • The effort force is closer to the pivot than the load force.
    • The handle makes the spanner easy to grip so a large force is produced.
  • A screwdriver is being used to open a tin of paint. Which statements are correct?
    A screwdriver is being used to open a tin of paint. Which statements are correct?
    • The screwdriver is acting as a force multiplier.  ✓
    • The load force is very close to the pivot.  ✓
    • The effort force is very close to the pivot.
    • The pivot is the edge of the paint tin.  ✓
    • The effort and load forces must be equal and opposite.
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