Answer :
The new time period of the system is 8.77 sec. If she stands up.
calculation
T = 2π√(L/g)
l = g*(8.85/2π)^2
new length = l -0.35= 8.85-0.35
T = 8.77 sec
Term (T) is the amount of time an oscillating body takes to repeat itself, and Frequency (f or ν) is the variety of instances it repeats in one 2d or unit time. in case you degree time in s (seconds) then frequency is measured in Hz (cycles or durations in keeping with second.
center of mass:
The centroid of a mass distribution in space is the unique point where the weighted relative positions of the distribution masses sum to zero. This is the point where force can be applied to produce linear acceleration without angular acceleration.
Learn more about center of mass here:
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