Question 1
WAEC
•
2021
•
PHYSICS
•
practical
You are provided with a set of masses, two metre rules, a piece of thread, two retort stands and clamps, a stopwatch, split corks and a weighing balance.
Question Parts
(
i
)
Measure and record the mass, M, of the metre rule.
(
ii
)
Suspend the metre rule, whose mass has been measured, by means of two vertical strings of equal lengths, l= 70 cm.
(
iii
)
Make the separation between the threads, d=80 cm.
(
iv
)
Suspend a mass m=20 g from the mid-point of the metre rule by means of a thread such that the distance between the mass and the rule, h=15.
(
v
)
Displace the ends of the metre rule in a horizontal plane in opposite directions. Release the rule to perform horizontal oscillations.
(
vi
)
Determine the time, for 20 oscillations.
(
vii
)
Evaluate the period T, T^{2} and T^{-2}.
(
viii
)
Repeat the procedure for four other values of m=30 g, 50 g, 70 g and 100 g keeping the values of h, d and l constant. In each case, determine and evaluate T, T^{2} and T^{-2}.
(
ix
)
Tabulate the results.
(
x
)
Plot a graph with T^{-2} on the vertical axis and m on the horizontal axis.
(
xi
)
Determine the slope, s, of the graph.
(
xii
)
State two precautions taken to ensure accurate results.
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About This Question
This is
Waec
2021
Physics
Question 1.
It is one of the
practical
questions from the
2021
Waec
Physics
examination.
The question covers
General
.