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Draw the force diagram for the pulley system and show how the torque is equal to τ = mgRsin(90) (Physlics Lab Moment of Inertia)

Needle (to read angle
from protractor)
Ringstand
Metal Disk
Torsion Wire
Pulley
(with protractor)
Thread
Figure 1: Torsion pendulum with pulley and masses attached.
Secondary
Pulley
Hanging Mass

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