Ijmb Model Questions Vol1 2025 Physics Question 3

Practice practical question 3 from the 2025 Ijmb Model Questions Vol1 Physics examination. This question covers Motion, Simple pendulum, Measurement, Error analysis .

Ijmb Model Questions Vol1 2025 Physics Practical
Topics: Motion Simple pendulum Measurement Error analysis
Question 3 IJMB_MODEL_QUESTIONS_VOL1 • 2025 • PHYSICS • practical

A simple pendulum is set up to determine the acceleration due to gravity. The bob is a solid steel sphere of negligible size compared with the length of the string. The string is attached to a fixed point and the distance from the point of suspension to the centre of the bob is measured with a metre rule. The pendulum is displaced a small angle and released. The time for 20 complete oscillations is recorded three times using a stop‑watch.

Question Parts

( a )
If the measured distance from the point of suspension to the centre of the bob is 0.540 m, state the length L of the pendulum to be used in calculations.
( b )
The recorded times for 20 oscillations are 40.2 s, 40.5 s and 40.3 s. Calculate the average period T (in seconds) of one oscillation.
( c )
Using the average period obtained, calculate the experimental value of g (in m s⁻²) using the formula T = 2π√(L/g). Show all steps.
( d )
Determine the percentage error of the experimental value of g obtained in part (c) relative to the accepted value 9.81 m s⁻².
( e )
State two possible sources of systematic error that could have contributed to the large percentage error obtained.

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About This Question

This is Ijmb Model Questions Vol1 2025 Physics Question 3. It is one of the practical questions from the 2025 Ijmb Model Questions Vol1 Physics examination.

The question covers Motion, Simple pendulum, Measurement, Error analysis .

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