Neco Model Questions Vol1 2022 Physics Question 1

Practice essay / theory question 1 from the 2022 Neco Model Questions Vol1 Physics examination. This question covers Measurements and Units, Error analysis, Simple harmonic motion .

Neco Model Questions Vol1 2022 Physics Essay / Theory
Topics: Measurements and Units Error analysis Simple harmonic motion
Question 1 NECO_MODEL_QUESTIONS_VOL1 • 2022 • PHYSICS • essay
Neco Model Questions Vol1 2022 Physics Question 1 diagram

A simple pendulum experiment is set up to determine the acceleration due to gravity (g). The apparatus consists of a sturdy wooden stand, a thin non‑elastic string attached to the stand, and a smooth metal spherical bob. The length of the pendulum is measured from the point of suspension to the centre of the bob using a metre rule. The time for 20 complete oscillations is recorded with a digital stopwatch. The measured length of the string is 0.500 m and the recorded time for 20 oscillations is 28.40 s.

Question Parts

( a )
State the formula that relates the period of a simple pendulum to its length and g, and show how the period (T) is obtained from the recorded time.
( b )
Using the period obtained in (a), calculate the experimental value of g. Show all steps and keep intermediate results to three significant figures.
( c )
Identify two possible sources of systematic error in this experiment and explain qualitatively how each would affect the calculated value of g (whether it would increase or decrease the result).
( d )
Express the obtained value of g in cm s⁻² and state the result with the appropriate number of significant figures.

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About This Question

This is Neco Model Questions Vol1 2022 Physics Question 1. It is one of the essay questions from the 2022 Neco Model Questions Vol1 Physics examination.

The question covers Measurements and Units, Error analysis, Simple harmonic motion .

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