- Balance the pendulum bar on the sharp wedge with the knife edge at its center of mass.
- After ensuring that the pendulum is optimally balanced on the sharp wedge at the center of mass, put the knife edge at the extreme position of the pendulum
- Displace the pendulum to one side keeping it parallel to the wall, and release
- Let the pendulum perform 2-5 oscillations and come to steady state, then note the time for 20 oscillations (one oscillation is made when the pendulum reaches the same extreme point from where you released it).
- Repeat the experiment and note your observation for each position on either side of center of mass.
- Find the positions for which the time period matches and note them separately.
Two physical quantities need to be measured in this experiment – Length and time (period). Make the following table –
Table II : The details of the physical quantities to be measured
Sl No. | Physical Quantity | independent/dependent | measured with | Measuring instruments |
minumum | maximum | least count |
1 | Length | | | | | |
2 | Time | | | | | |