PHY 115 Acceleration of Steel Lab

1)Watch the following video: https://youtu.be/O32PhEsX0DY2)

2) As the steel ball falls down in front of the meter stick, record the times when the steel ball is at the 10 cm, 20 cm and 30 cm marks.

Times (t)
Time 1 @ 10cm	Time 2 @ 20cm	Time 3 @ 30cm

Don't forget the units!

t1= (time 2-time 1) = ___________

t2 = (time 3-time 2) = ______________

3) Distances (s)

s1 = 20cm-10cm = __________

s2 = 30cm-20 cm = ________________

Convert s1 and s2 from cm to meters.

s1 = _____________ s2 = __________________

4) Velocities (v) Show all work!

v1 = s1/t1

V1= ____________________

v2 = s2/t2v2

V2= ___________

5)Acceleration (a) Show all work!

a = (v2-v1)/t2

a = ______________

This is your measured acceleration.

6) Calculate the % error = _____% (Ignore any negative since absolute value is used.)

The published value of acceleration is 9.8 m/s2.%

error = |measured - published| * 100

________________________________________

published

Question: Why do you think you got this error? Give at least one reason for the error.(Do NOT write human error or math error. Explain the reason!)