Question

A student investigates a pendulum. He measures the time for the pendulurn to complete 20 oscillations. He repeats the experiment three more times. The readings are shown. experiment 1 2 3 4 time for 20 oscillations/s What is the average period of the pendulum? A 0.88 s B 0.92 s 17.6 19.8 17.6 18.6 C 17.6s D 18.4s.

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Answer 1

The average period of the pendulum is 18.4 s.

Step-by-step explanation:

To find the average period of the pendulum, we need to calculate the mean of the four measurements. Adding up the times for 20 oscillations for each experiment gives us 17.6 + 19.8 + 17.6 + 18.6 = 73.6 s. Dividing this sum by the number of experiments (4) gives us an average of 73.6/4 = 18.4 s. Therefore, the correct answer is D) 18.4 s.