PASCO ME-6694 TORSION PENDULUM - Manual (Page 14)

10
Torsion Pendulum 012–06339A
Compare the values of calculated I
1. Calculate I using both formulas: I =
T
2
π
2
κ
and I =
1
2
mR
2 and record
above.
mass of disk (kg)_________
radius of disk (m)_________
Table 1.2
Calculation of I from torsional spring constants of wires ( κ )
Run wire diameter κ (N·m) T I
(inches) (from pt.A) (s) (kg/m 2 )
1 0.032
2 0.047
3 0.062
I (using mass and radius measurements) _____________
8. Change the wire to the 0.062 inch diameter wire and repeat steps 2–6.
9. Determine the mass and radius of the disk and record below.