| Unextended spring
loop before being mounted on puck. | The loop extended. Whenever this loop is stretched the same amount, we seem to get the same force. |
 |  |
The flash photograph below shows the puck being pulled to the right.
The light flashes were separated by 10/24 s.
A constant force was applied by keeping the loop extension constant.
Motion without Force |
|
Changing the Force |