Neco 2021 Physics Question 3

Practice practical question 3 from the 2021 Neco Physics examination. This question covers Motion, Pendulum .

Neco 2021 Physics Practical

Topics: Motion Pendulum

Question 3 NECO • 2021 • PHYSICS • practical

A simple pendulum is set up to determine the acceleration due to gravity (g). The length of the pendulum is measured as 0.500 m using a metre rule (least count 1 mm). The bob is displaced through a small angle of 5° and released. The time for 10 complete oscillations is recorded for five trials as follows: 14.85 s, 14.80 s, 14.90 s, 14.88 s, 14.86 s. Using the data, determine g and evaluate the experiment.

( a )

Calculate the average period of one oscillation (in seconds) from the given data.

( b )

Using the small‑angle correction, \(T = 2\pi\sqrt{L/g}\,(1+\theta^{2}/16)\), where \(\theta\) is in radians, calculate the value of g (in m s⁻²).

( c )

Find the percentage error of the experimental value of g with respect to the accepted value 9.81 m s⁻².

( d )

State two possible sources of error that could have caused the obtained value of g to be lower than the accepted value.

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This is Neco 2021 Physics Question 3. It is one of the practical questions from the 2021 Neco Physics examination.

The question covers Motion, Pendulum .

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