The giant swing at a county fair consists of a verticle central shaft with a num

Question

The giant swing at a county fair consists of a verticle central shaft with a number of horizontal arms attached at its upper end. See the figure. Each arm supports a seat suspended from a 5 m long rod, the upper end of which is fastend to the arm at a point 3 m from the central shaft.

A.) find the time of one revolution of the swing of the rod supporting the seat makes a 30 degree with respect to the verticle.

B.) Does the angle depend on the weight of the passenger for a given rate of revolution?

Explanation / Answer

it's a pendulum question
a) T= 2l/g where l is 5m and g is 9.8

only depends on the length.

b) does not depend on the angle.

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