
Room setup |

Photogate position relative to track |

One end loop of spring is slightly smaller than the other
(in picture above, the left side is smaller) |

Attach spring to cart by placing the smaller end
into the slot on the cart. . . |

. . . then hold spring in place with screw |

Spring attachment |

If cart with plunger is used, attach spring
to plunger release |

The left stop is positioned at 100 cm mark;
attach larger loop of spring to screw |

The right stop is positioned at the
200 cm mark |

Small hook (actually a bent paper clip) on
string is attached to screw on cart |

The loop end of string is placed over pulley;
small masses will be suspended from loop |

Small screw, 500 g mass block, small masses with hooks;
place all masses on bench near track |