PASCO ME-9502 Statics System - Manual (Page 38)

S t a t i c s S y s t e m E x p . 6 : T o r q u e — N o n - P a r a l l e l F o r c e s
®
34 012-12876B
Suspend a mass, M
2
, from one protractor. Mount the Spring Scale on the Statics Board and connect it to the other
protractor using a thread and a Pulley as shown.
Procedure
1. Measure d
1
and d
2
and record the values.
2. Record the total mass, M
2
, and the magni-
tude of the force, F
2
(weight of the hanging
mass). Use your measured values to calcu-
late the torque,

2
, produced by the force, F
2
.
Be sure to include the units for each value.
• By moving the pulley, you can adjust the angle of the force, F
1
. Note that when you move the pulley, you also
need to move the Spring Scale in order to keep the thread perfectly vertical between the Spring Scale and the
pulley.
3. Set the angle of F
1
to each of the values shown in the table below. At each angle, move the Spring Scale
toward or away from the pulley as needed so that the magnitude of F
1
is sufficient to balance the beam.
Record the force reading on the Spring Scale in newtons.
d
1
(m) d
2
(m) M
2
(kg) F
2
(N)  (N•m)
Angle F
1
(N)

1
= F
1
d
1
sin

30°
40°
50°
60°
70°
80°
M
2
Figure 6.2: Equipment Setup
Spring
Scale
Pulley
Protractor
Beam
M
2
F
2
F
1
d
2
d
1

Pivot point
Figure 6.3: Schematic

1

2
–
  
1

2
+
  2  