Question

In the Cavendish balance apparatus shown in Figure 13.4 in the textbook, suppose that m1 = 1.30 kg , m2 = 26.0 kg , and the rod connecting each of the pairs of masses is 32.0 cm long. Once the system reaches equilibrium, each pair of masses, m1 and m2, are separated by a distance of 13.0 cm center-to-center.

Part A

Find the magnitude of the net force on one of the small masses, m1 .

Part B

Find the gravitational torque (about the rotation axis) on the rotating part of the apparatus. Ignore any forces on the connecting rods in your calculation.

Part C

Suggest some ways to improve the sensitivity of this experiment.

Answer 1