how to make newton’s cradle working model science project – diy

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Creating a Newton’s cradle working model is a fascinating and educational project that demonstrates the conservation of momentum and energy.

Here’s a step-by-step guide to making a simple Newton’s cradle using balls:

Materials you will need:

  • A sturdy frame or base (can be made of wood, plastic, or metal)
  • 5 identical balls (e.g., metal or plastic)
  • String or fishing line
  • Hooks or eyelets
  • Glue or adhesive putty
  • Ruler or measuring tape
  • Pencil

Step-by-step instructions:

  1. Prepare the base:
    • Start by selecting a sturdy frame or base for your Newton’s cradle. It can be a wooden plank, a metal rod, or any other stable structure.
  2. Mark the positions for hooks:
    • Use a ruler or measuring tape to evenly mark five spots along the base where you will attach the hooks or eyelets to hang the balls. These positions should be in a straight line and equally spaced.
  3. Attach the hooks or eyelets:
    • Use the hooks or eyelets to secure each marked spot on the base. Make sure they are firmly attached and can hold the weight of the balls.
  4. String the balls:
    • Take five identical balls and tie each one to a separate string or fishing line. The length of the strings should be such that the balls hang at the same height when attached to the hooks.
  5. Position the balls:
    • Hang the strings with the balls on the hooks, positioning them in a straight line so that the balls are nearly touching each other. Adjust the height of the balls if needed to ensure they are at the same level.
  6. Demonstrate the Newton’s cradle:
    • To demonstrate the Newton’s cradle, pull one ball away from the rest and release it to strike the neighboring ball. Observe how the energy is transferred through the balls, causing the last ball to swing out while the first ball comes to a stop.
  7. Observe the conservation of momentum and energy:
    • As you continue to observe the movement of the balls, notice how the momentum and energy are conserved. When one ball on one end is lifted and released, the energy is transmitted through the series of balls, and the last ball on the opposite end swings with equal force.

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