Waec Model Questions Vol1 2019 Physics Question 3

Practice practical question 3 from the 2019 Waec Model Questions Vol1 Physics examination. This question covers Motion .

Waec Model Questions Vol1 2019 Physics Practical
Topic: Motion
Question 3 WAEC_MODEL_QUESTIONS_VOL1 • 2019 • PHYSICS • practical

A student is to determine the acceleration due to gravity (g) using a simple pendulum. The length of the pendulum (L) and the total time for 20 complete oscillations are recorded as follows: | L (m) | Total time for 20 swings (s) | |-------|------------------------------| | 0.40 | 25.1 | | 0.55 | 29.8 | | 0.70 | 33.2 | | 0.85 | 36.5 | The student is required to analyse the data and obtain a value for g.

Question Parts

( a )
Calculate the period (T) of the pendulum for each length.
( b )
Using the periods obtained, calculate T² for each length and present the results in a table.
( c )
Plot T² against L (use the first and last points to determine the gradient). From the gradient, calculate g using the relation gradient = 4π² / g. Give g to one decimal place in m s⁻².
( d )
State two possible sources of error in this experiment and suggest a method to minimise each.

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About This Question

This is Waec Model Questions Vol1 2019 Physics Question 3. It is one of the practical questions from the 2019 Waec Model Questions Vol1 Physics examination.

The question covers Motion .

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