In the following problems, assume the following parameters: Mass of the bottom steel disc: 1.468 kg.
Mass of the upper steel disc: 1.479 kg.
Mass of the upper aluminum disc: 0.461 kg.
Radius of each disc: 63.3 mm.
Radius of the take-up spool: r= 1.25 cm.
Mass of the falling weight: 25 grams.
1. Using the values given above, calculate the following:
A. The moment of inertia of the lower, steel disc.
B. The moment of inertia of the upper, steel disc.
C. The moment of inertia of the upper, aluminum disc.
D. The combined moment of inertia of the two steel discs.
2. Using the results of problem 1, what percentage error is made by neglecting mr with respect to l in equation (101)?
3. Suppose that the counter is reading 400 counts per second at some moment. What is the value of co at that moment?