Procedure – PASCO ME-6831 Ballistic Pendulum_Projectile Launcher User Manual
Page 24
P r o j e c t i l e L a u n c h e r
E x p . 3 : P r o j e c t i l e R a n g e v e r s u s A n g l e
®
20
012-05375C
2.
Adjust the angle of the Projectile Launcher to
10 degrees.
3.
Put a plastic ball into the Projectile Launcher
and cock it to the medium or long range setting.
•
Note: In general, the experiment will not work
as well on the short range setting because the
muzzle speed is more variable with the change
in angle.
4.
Fire one shot to locate where the ball hits. Place
a box or other horizontal surface at that location
so the ball will hit the top of the box at the same
level as the muzzle of the launcher.
Procedure
Part A: Shooting to a Level Surface
1.
Fire one shot to locate where the ball hits the top of the box. Tape a piece of white paper on the box at this
location. Tape a piece of carbon paper (carbon-side down) on top of the white paper.
•
When the ball hits the carbon paper it will leave a mark on the white paper underneath.
2.
Fire five shots.
3.
Use a measuring tape to measure the horizontal distance from the muzzle to the leading edge of the paper. (If
a measuring tape is not available, use a plumb bob to find the point on the table that is directly beneath the
release point on the barrel and measure the distance along the table from the muzzle to the leading edge of the
paper.) Record the distance in the Data Table.
4.
Carefully remove the carbon paper. Measure from the leading edge of the paper to each of the five dots and
record these distances in the Data Table.
5.
Increase the launch angle by 10 degrees and repeat all the steps.
6.
Keep repeating for angles up to and including 80 degrees (the complementary angle of 10 degrees).
Part B: Shooting Off the Table
1.
Turn the Projectile Launcher so it will launch the ball to the floor.
Table 3.1: Shooting to a Level Surface
Angle
10
20
30
40
50
60
70
80
1
2
3
4
5
Average
Paper distance
Total distance
CAUTION!
DO NOT LOOK
DOW
N BARREL!
CAUTION!
DO NOT LOOK
DOW
N BARREL!
CA
UT
ION!
DO
NO
T LO
OK
DO
WN
TH
E B
AR
RE
L.
LO
NG
RA
NG
E
ME
DIU
M
RA
NG
E
SH
OR
T
RA
NG
E
Po
sit
ion
of
Ba
ll
La
un
ch
SHOR
T RANGE
PROJECTILE LAUNC
HER
ME-6800
Ye
llow Ban
d i
n W
indow
Ind
icates R
an
ge.
90
80
70
60
50
40
30
20
10
0
WEAR
SAFETY
GLASSES
WHEN IN USE.
Us
e 2
5 m
m
ba
lls
ON
L
Y!
Figure 3.3: Shooting to a level surface
Horizont
al Dist
ance