Physics

# In order to measure the period of a single pendulum using a stop clock, a student repeated the experiment for $10$ times and noted down the time period for each experiment as $5.1, 5.0, 4.9, 5.1, 5.0, 4.9, 5.1, 5.0, 4.9, 4.9$s. The correct way of expressing the result for the period is?

$5.0$s

##### SOLUTION
Mean$=\dfrac{\sum x_if_i}{10}=\dfrac{(4.9\times 4)+(5.0\times 3)+(5.1\times 3)}{10}=4.99s$

Which can be round off to $5.0s$ correct to two significant figures.

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Single Correct Medium Published on 18th 08, 2020
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