Moment of a force

  • Wobbler
    problem
    Favourite

    Wobbler

    Age
    16 to 18
    Challenge level
    A cone is glued to a hemisphere. When you place it on a table in what position does it come to rest?
  • Overarch 2
    problem

    Overarch 2

    Age
    16 to 18
    Challenge level
    Bricks are 20cm long and 10cm high. How high could an arch be built without mortar on a flat horizontal surface, to overhang by 1 metre? How big an overhang is it possible to make like this?
  • Balancing 1
    problem

    Balancing 1

    Age
    11 to 14
    Challenge level

    Meg and Mo need to hang their marbles so that they balance. Can you work out what they need to do?

  • Balancing 2
    problem

    Balancing 2

    Age
    11 to 14
    Challenge level

    Meg and Mo still need to hang their marbles so that they balance, but this time the constraints are different. Can you find out what they need to do?

  • Balancing 3
    problem

    Balancing 3

    Age
    11 to 14
    Challenge level

    Mo has left, but Meg is still experimenting. How can she alter her pouch of marbles and still keep the two pouches balanced?

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