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Measurement, accuracy and precision

Lower Sec Science · Secondary 1 · Hard · Measurement, accuracy and precision

A pendulum swings from left to right and back again. A stopwatch is started when it passes the centre, goes to the right, then to the left, and is stopped when it reaches the leftmost point. The time recorded is

T

s. What is the period of the pendulum?

$\dfrac{T}{2}$ s
$\dfrac{2T}{3}$ s
$\dfrac{4T}{3}$ s
$\dfrac{3T}{4}$ s

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