**Newton's Second Law
**

1. Sketch the setup. Set the photogate to PULSE mode. Arrange the two photogates a distance d apart, then allow the glider to start at d

**Part
I.**

2.
Apply the accelerating force (using 10g, 20g, 30g, 40g,
50g) and calculate the glider's acceleration from the recorded
time. Run the cart for 5 trials, changing the accelerating force
only.

**Part
II.**

3.
Record the mass of the "empty" glider and
calculate its acceleration from the recorded time using an
accelerating mass of 10g. Run
the cart for 5 trials, *changing the mass of the cart* in
increments of 50 g.

**Analysis**

1. Plot graphs of

(a) accelerating Force (y-axis) vs.
acceleration (data from Step 2)

(b) acceleration
(y-axis) vs. mass of
glider (data from Step 3)

2. Calculate the
slope of graph (a). What
should the slope represent?

3. What mathematical
relationship is shown in graph (b) between acceleration and mass?

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