Consider a Cavendish apparatus that employs a torsion fiber with k 1 0 10 8 N m Suppose the smallest twist angle that can be measured is 2 0 If the distance from one of the masses m 1 to the torsion fiber is 10 cm (see Fig 11 31), what is the smallest force F that can be measured Assume a force F i...

The smallest twist angle that can be measured corresponds ...

Consider a Cavendish apparatus that employs a torsion fiber with k = 1.0 10 -8 N

Question:

Consider a Cavendish apparatus that employs a torsion fiber with k = 1.0 × 10^-8 N · m. Suppose the smallest twist angle that can be measured is θ = 2.0°. If the distance from one of the masses m₁ to the torsion fiber is 10 cm (see Fig. 11.31), what is the smallest force F that can be measured? Assume a force F is applied to both of the masses m₂. Compare your result for F to the weight of a mosquito (m ≈ 10^-3 g).

Figure 11.31

Torsion fiber Beam m2 тz · Light beam Mirror m1 The masses m2 are held fixed.