Variables
Apparatus set up to measure the distance and time for the ball bearing to drop
This method is an example of the procedure for varying the height the ball-bearing falls and determining the time taken – this is just one possible relationship that can be tested
Example Table of Results
The graph of 2h/t against t produces a straight-line graph where the acceleration is the gradient
Systematic Errors:
Random Errors:
A student investigates the relationship between the height that a ball-bearing is dropped between two light gates and the time taken for it to drop.Calculate the value of g from the table.
Step 1: Complete the table
Calculate the average time for each height
Add an extra column 2h / t
Step 2: Draw graph of 2h/t against time t
Make sure the axes are properly labelled and the line of best fit is drawn with a ruler
Step 3: Calculate the gradient of the graph
The gradient is calculated by:
转载自savemyexams
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