The period T (in seconds) of a simple pendulum is a function of its length l (in

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The period T (in seconds) of a simple pendulum is a function of its length l (in feet) defined by the equationimage


where g ≈ 32.2 feet per second per second is the acceleration due to gravity.


(a) Use a graphing utility to graph the function T = T(l).


(b) Now graph the functions T = T( l + 1), T = T( l + 2), and T = T(l + 3).


(c) Discuss how adding to the length l changes the period T.


(d) N ow graph the functions T = T(2l), T = T(3l), and T = T(4l).


(e) Discuss how multiplying the length l by factors of 2, 3, and 4 changes the period T.

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