1. Acceleration of Gravity
Introduction:

2. Equipment & Materials Stopwatch Wooden Block Glider Air Track Air Pump
Ruler & Caiper

3. Experiment Set Up h: height of the block h/x = sin Q
X: distance traveled = 1m
h/x = sin Q

4. Decompose g to gsinQ and …90
(x) g
Air Track
(h) Q Q
a = gsin Q = g h/x

5. Calculation Continue a = g sin Q = g h/x g = a x / h (1)
Measure a using a stopwatch--- get time t it takes the glider to slide the distance x : 1 m between the 2 foot support. If the glider starts from rest: (initial velocity = 0)
X = ½ a t2
a = 2X / t2

6. Calculation Continue Substitute a = 2X / t2 to (1) g = a x / h
g = 2x/ t2 (x/h) = 2 x2 / t2h
Here, x = 1m, you need measure h and t (3 times)

7. Calculation Continue
tavg = (t1 + t2 + t3) / 3

8. Final result & Error Analysis
Using tavg to calculate the experimental value of gravitational acceleration gexp
gexp = 2 x2 / t2h here t is tavg.
Error% = abs ((gtheo – gexp)/gtheo) x 100%
the theoretical value of g  gtheo = 9.8 m/s^2