Figure shows a physical pendulum constructed from equal-length sections of identical pipe. The inner radius of the pipe is 10.2 cm and the thickness is 6.40 mm.

(a)    Calculate the period of oscillation about the pivot shown.

(b) Suppose that a new physical pendulum is constructed by rotating the bottom section 90° about a vertical axis through its center. Show that the new period of oscillation about the same pivot is about 2% less than  the period of the original pendulum.

 

Simran Bhatia , 9 Years ago

Grade 11