A student is investigating the oscillation of a metre rule that has one end resting on the laboratory bench. The other end is held above the level of the bench by a spring attached at the 90.0 cm mark. The arrangement is shown in the diagram below.

The period of oscillation is changed by moving a 200 g mass to different positions along the rule. The student records the time t taken for 10 oscillations of the end of the rule for each position of the mass. He measures the distance from the end of the rule to the mark under the centre of the mass. The readings are shown in the table below.

a. Copy the table. Calculate the period T for each set of readings and enter the values in your table.

b. Plot a graph of d/cm (x-axis) against T/s (y-axis).

c. Using the graph, determine the period T when the distance d is 55.0 cm.

d. The student suggests that T should be proportional to d. State with a reason whether your results support this suggestion.

Transcribed Image Text:

damp spring metre rule d. bench