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TBR question about period of pendulum

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"How would the period of a simple pendulum be affected, if the point of suspension were moving vertically upward with an acceleration of g/2 m/s^2?"

A. Period increases
B. Period decreases
C. Period remains the same
D. Cannot be determined

Based on the equation f = 1/2pi (square root of g/L), g is directly proportional to the frequency, thus inversely proportional to the period.

In their explanation, they say that the effective g is = g + g/2.

When I saw this, I was confused by how they...

TBR question about period of pendulum

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