9
3.
Elastic interaction
-
Place approximately the same weight on the 2 gliders, remembering
that the first glider is equipped with the launcher accessory (16 g) and
the second with the spring (0.7 g).
-
Position the first glider on the launcher and the second stopped in the
middle of the track.
-
Measure the velocity of the first glider (before the impact).
This gives you the initial momentum:
𝑝
0
⃗⃗⃗⃗⃗ = 𝑚
1
∗ 𝑣
0
⃗⃗⃗⃗⃗
-
Measure the velocity of the first glider after the impact.
To do this, place the photogates after the second glider, from which
barrier rod has been removed.
You can then calculate the momentum of the 1st glider after the
impact:
𝑝
1
⃗⃗⃗⃗⃗ = 𝑚
1
∗ 𝑣
1
⃗⃗⃗⃗⃗
-
Measure the velocity of the second glider after the impact.
To do this, place the photogates after the second glider. Remove the
barrier rod from the first glider.
You can then calculate the momentum of the 2nd glider after the
impact:
𝑝
2
⃗⃗⃗⃗⃗ = 𝑚
2
∗ 𝑣
2
⃗⃗⃗⃗⃗
