Pendulum Experiment Quiz

Which of the following is a precaution that helps improve the accuracy and reliability of the pendulum experiment?

• Eliminate draughts in the room.

• Use a heavier bob only.

• Release the pendulum from a higher point.

• Time only one swing.

If you want to investigate how the length of a pendulum affects its oscillation period, which step should you take after recording the period and bob mass for one length?

• Replace the string with a longer length and repeat the measurements.

• Change the shape of the bob.

• Increase the amplitude of the swing.

• Use a different stopwatch.

Which of the following is a suggested improvement for increasing the reliability of results in the pendulum experiment?

• Repeat readings and average them.

• Use only one length of string.

• Time only one swing.

• Change the shape of the bob for each trial.

How does using a set-square help in the pendulum experiment?

• It provides a horizontal reference to ensure accurate length measurement.

• It increases the mass of the bob.

• It makes the pendulum swing faster.

• It eliminates the need for a stopwatch.

What is the correct formula for calculating a moment about a pivot?

• Moment = Force × perpendicular distance from the pivot

• Moment = Mass × acceleration

• Moment = Force / distance

• Moment = Mass × velocity

If the mass slips along the ruler during the experiment, what is the recommended remedy?

• Secure the mass with a small piece of tape

• Remove the mass and start over

• Use a heavier mass

• Ignore the movement

If the cylinder (pivot) is not centred, what should be done to ensure accurate measurement?

• Measure its diameter, compute the radius, and align the edges accordingly

• Ignore the misalignment

• Use a different ruler

• Add more masses to balance

Which of the following best describes the aim of the experiment involving Hooke’s law as outlined in the learning material?

• To investigate Hooke’s law by measuring how a spring’s extension varies with applied load.

• To determine the melting point of a metal using a spring.

• To measure the resistance of a wire using a spring.

• To calculate the speed of sound using a vibrating spring.

According to Hooke’s law, which equation correctly relates the stretching force (F), extension (x), and spring constant (k)?

• F = kx

• F = k/x

• F = x/k

• F = k + x

Why is it important to use at least five distinct loads when conducting the Hooke’s law experiment?

• To produce a reliable graph and improve the accuracy of the results.

• To make the experiment more time-consuming.

• To ensure the spring breaks during the experiment.

• To reduce the number of measurements needed.