Question

In a science museum, you may have seen a Foucault pendulum, which is used to demonstrate the rotation of the earth. In one museum's pendulum, the 120 kg bob swings from a 18.2-m-long cable with an amplitude of 5.0.

When the bob is at its maximum displacement, how much higher is it than when it is at its equilibrium position?

Express your answer with the appropriate units.

Answer 1

m-120 kg 1-18.2 m The diagram for the bob is as follows From the graph, Cos6 Rearrange the above equation for l. The height raised by the bob is 1-1cos6 -cose Substitute the values in above equation. h-(18.2m)(1-cos 5°) -(18.2 m)(1-0.99619) -0.069 m 0.07 m