Changes in Velocity when a Constant Force Acts

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.

Dependence of Change of Velocity on Magnitude of Force

To apply twice the original force, we attach two identical loops to the puck.



The puck used in the first experiment is accelerated by twice the force used before.
The interaval between flashes is 10/24 s.