17. Measurement of g with a pendulum

  • pendulum bob

  • approximately 1.5 m string or thread

  • two small wooden blocks to clamp the string

  • stand , boss and clamp

  • pin and blu tack to use as a fiducial marker.

  • metre ruler

  • stop clock (reading to 0.01 s)

Hazard Risk Control measure

Breaking wire

Physical injury if the pendulum breaks.

Students should wear eye protection and should provide safe landing for the load should sample break, e.g. a box containing old cloth/sponges etc.