Method
- All the apparatus was collected.
- The retort stands, boss clamps, light-gates and metal ramp were set up as shown in figure \ref{733451}
- A mark was drawn on the side of the ramp every \(\SI{10}{\centi\meter}\).
- The first light-gate was moved to the bottom of the ramp and the second to the tom.
- The ball was rolled from the top to test that the light-gates were functional.
- The data-logging software was initiated.
- The first light-gate was moved to the \(\SI{10}{\centi\meter}\) mark.
- The ball was rolled from the top five times.
- The first light-gate was moved down \(\SI{10}{\centi\meter}\).
- Steps 8-9 were repeated until \(\SI{90}{\centi\meter}\).
- The data was recorded in a table