1. Measurement of g

2. Module 1- Motion
-Measurement of g
Below is a diagram on the ‘trap door and electromagnet method for determining g’.
There will be a degree of uncertainty in this experiment because:
If the electromagnet’s current is too strong there will be a delay in releasing the ball after the current is switched off and the clock is triggered.
If the distance of fall is too large, or the ball is too small, air resistance might have a noticeable effect on its speed.
You need you make sure you measure from the bottom of the ball when it is held by the electromagnet.