Report on Laboratory Experiment "Newton's Second Law: Atwood's Machine"

NOTE: We can leave all masses in grams (g) since all calculations involve ratios of masses.

DATA TABLE

	Trial 1	Trial 2	Trial 3	Trial 4
Mass of pulley M, g	200
Mass of the first weight holder mweight holder 1 (g)	50
Mass of the weight, placed in the weight holder 1 Dm1 (g)	20	40	60	80
Total ascending mass m1 (g) /Note: m1= mweight holder 1 + Dm1/
Mass of the second weight holder mweight holder 2 (g)	50
Mass of the weight, placed in the weight holder 2 Dm2 (g)	30	50	70	90
Total descending mass m2 (g) /Note: m2= mweight holder 2 + Dm2/
Height of fall h (m)	0.80	0.80	0.80	0.80
Time of fall t (s)	Measurement 1	2.34	2.08	2.45	2.46
	Measurement 2	2.15	2.46	2.64	2.57
	Measurement 3	1.98	2.25	2.24	2.62
	Measurement 4	2.06	2.32	2.37	2.22
	Measurement 5	2.04	2.14	2.48	2.61
Average time of fall t (s)
Theoretical acceleration a from (1) (m/s2)
Measured acceleration a from (2) (m/s2)
% Difference