Level the air track.
Align the photogates so that two time measurements can be made.
Do 5 trials each with 6 different amounts of mass hanging from the pulling string.
Determine average accelerations for the 6 experiments.
Graph acceleration (vertical axis) as a function of 1/{1 + m_car/m_hanger} (horizontal axis).

Run 1: Mass on hanger = ____________

trial t₁ t₂ v₁ v₂ a
1
2
3
4
5

Run 2: Mass on hanger = ____________

trial t₁ t₂ v₁ v₂ a
1
2
3
4
5

Run 3: Mass on hanger = ____________

trial t₁ t₂ v₁ v₂ a
1
2
3
4
5

Run 4: Mass on hanger = ____________

trial t₁ t₂ v₁ v₂ a
1
2
3
4
5

Run 5: Mass on hanger = ____________

trial t₁ t₂ v₁ v₂ a
1
2
3
4
5

Run 6: Mass on hanger = ____________

trial t₁ t₂ v₁ v₂ a
1
2
3
4
5

Run	hanger mass	1/{1 + m_car/m_hanger}	a
1
2
3
4
5
6

Now using Excel, graph a (vertical axis) as a function of 1/{1 + m_carm_hanger} (horizontal axis). Find the slope of this graph. The slope should be g.