Resultant force and acceleration
It is important to record results in a suitable table, like the one below:
|Force (N)||Run 1 acceleration (m/s)2||Run 2 acceleration (m/s)2||Run 3 acceleration (m/s)2||Mean acceleration (m/s)2|
Plot a graph of resultant force F in N on the y-axis against acceleration a in m/s2 on the x-axis. Draw the line of best fit.
The graph is a straight line through the origin.
This tells us that resultant force, F, and acceleration, a, are directly proportional.
If you double the resultant force acting on an object, you double its acceleration.
|Electrical appliance (data logger and computer)||Electrical fault - fire/shock||Do not set up close to taps or sink. Check mains cable and plug are not broken, or wiring exposed before use.|
|Masses and hanger falling to floor||Objects falling on feet - bruise/fracture||Use relatively small masses and step back after releasing masses. Place bench stools as a cordon beneath the accelerating masses to prevent feet being placed beneath them.|