Determining the Velocity of a Steel Ball Using a Ballistic Pendulum


To measure the velocity of a steel ball using a ballistic pendulum.


The following video shows how the ballistic pendulum works:

  1. Set it up.
  2. Pull the lever back to one of the three positions.
  3. Press the trigger to release the lever.
  4. Record the angle of displacement of the pendulum block.
  5. Calculate the velocity of the steel ball based on the angle and the data given below.

Ballistic Pendulum Data

  • Mass of steel ball:  7.5 g ± 0.1 g
  • Mass of pendulum block:  80 g ± 2 g
  • Length of pendulum:  200 mm ± 2 mm
Last modified: Sunday, 3 June 2012, 1:19 AM