Lap Report Spark Timer Essay Example
Carly Beardshear
Mr. Volle
September 6, 2010
2nd hour
Lab Report
I. Purpose The purpose of this lab is to investigate gravitational force on acceleration.
II. Materials 1. Spark Paper 2. Spark Time 3. 350 Gram Weight 4. Ticker Tape
III. Procedure 1. Measure 1 meter of spark paper. 2. Thread paper through spark timer and set timer to 60 Hz. 3. Tape 350 g weight to spark paper. 4. Turn on spark timer. 5. Drop weight from height of a desk (34 in). 6. Record the data. 7. Analyze and graph.
IV. Results
Time Displacement Velocity
1/60 3 mm 180mm/s
2/60 4 mm
3/60 2 mm
4/60 5 mm
5/60 7 mm 420 mm/s
6/60 11 mm
7/60 13 mm
8/60 17 mm
9/60 19 mm 1140 mm/s
10/60 22 mm
11/60 25 mm
12/60 28 mm
13/60 30 mm 1800 mm/s
14/60 34 mm
15/60 35 mm
16/60 39 mm
17/60 42 mm 2520 mm/s
18/60 44 mm
19/60 46 mm
20/60 50 mm
21/60 53 mm 3180 mm/s
22/60 55 mm
23/60 59 mm
24/60 60 mm
25/60 64 mm
26/60 66 mm
27/60 68 mm 4080 mm/s
V. Analysis V=ΔX/ ΔT
#1 1. V=3/(1/60) = 180 mm/s
#5 2. V=7/(1/60) = 420 mm/s
#9 3. V=19/(1/60) = 1140 mm/s
#13 4. V=30/(1/60) = 1800 mm/s
#17 5. V=42/(1/60) = 2520 mm/s
#21 6. V=53/(1/60) = 3180 mm/s
#27 7. V=68/(1/60) = 4080 mm/s
Math: y2-y1/x2-x1 = 4080-420/(27/60)-(5/60) = 9981.82 (acceleration)
VI. Conclusion The effect of time on a falling objects velocity is dependent upon the gravitational pull. lab-theory/theory = 9981.82-9800/9800 = 1.85% error
VII. Evaluation Sources of error: 1. not measuring the ticker tape correctly to the exact mm. 2. not dropping the weight right when the spark timer is turned on. 3. dropping the weight at an angle and not straight down.
If I were to do this lab again I would have measure more
Mr. Volle
September 6, 2010
2nd hour
Lab Report
I. Purpose The purpose of this lab is to investigate gravitational force on acceleration.
II. Materials 1. Spark Paper 2. Spark Time 3. 350 Gram Weight 4. Ticker Tape
III. Procedure 1. Measure 1 meter of spark paper. 2. Thread paper through spark timer and set timer to 60 Hz. 3. Tape 350 g weight to spark paper. 4. Turn on spark timer. 5. Drop weight from height of a desk (34 in). 6. Record the data. 7. Analyze and graph.
IV. Results
Time Displacement Velocity
1/60 3 mm 180mm/s
2/60 4 mm
3/60 2 mm
4/60 5 mm
5/60 7 mm 420 mm/s
6/60 11 mm
7/60 13 mm
8/60 17 mm
9/60 19 mm 1140 mm/s
10/60 22 mm
11/60 25 mm
12/60 28 mm
13/60 30 mm 1800 mm/s
14/60 34 mm
15/60 35 mm
16/60 39 mm
17/60 42 mm 2520 mm/s
18/60 44 mm
19/60 46 mm
20/60 50 mm
21/60 53 mm 3180 mm/s
22/60 55 mm
23/60 59 mm
24/60 60 mm
25/60 64 mm
26/60 66 mm
27/60 68 mm 4080 mm/s
V. Analysis V=ΔX/ ΔT
#1 1. V=3/(1/60) = 180 mm/s
#5 2. V=7/(1/60) = 420 mm/s
#9 3. V=19/(1/60) = 1140 mm/s
#13 4. V=30/(1/60) = 1800 mm/s
#17 5. V=42/(1/60) = 2520 mm/s
#21 6. V=53/(1/60) = 3180 mm/s
#27 7. V=68/(1/60) = 4080 mm/s
Math: y2-y1/x2-x1 = 4080-420/(27/60)-(5/60) = 9981.82 (acceleration)
VI. Conclusion The effect of time on a falling objects velocity is dependent upon the gravitational pull. lab-theory/theory = 9981.82-9800/9800 = 1.85% error
VII. Evaluation Sources of error: 1. not measuring the ticker tape correctly to the exact mm. 2. not dropping the weight right when the spark timer is turned on. 3. dropping the weight at an angle and not straight down.
If I were to do this lab again I would have measure more