The length of a displaced pendulum body which passes its lowest point twice every second

0.248 m

Explanation:

The period of a simple pendulum is given by

where

L is the length of the pendulum

g is the acceleration of gravity

The pendulum in the problem passes its lowest point twice every second: this means: this means that it makes one complete oscillation in one second, so its period is 1 second:

T = 1 s

And using

We can rearrange the equation above to find L, the length of the pendulum:

the inner core.

good luck: )

klicker

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