Question

Two students with different stopwatches measure the period of a pendulum. Student #1 measures the period to be 0.7 s. Student #2 measures the period to be 1 s.

Answer 1

The difference in length of the pendulum is  13 cm.

Difference in the length of the pendulums

The difference in the length of the pendulum is calculated as follows;

Length of the pendulum of the first student

T = 2π√L/g

where;

• L is the length of the pendulum
• T is the period of the pendulum

T/2π = √L/g

(T/2π)² = L/g

(0.7/2π)² = L/9.8

9.8(0.7/2π)²  = L

0.12 m = L

12 cm = L

Length of the pendulum of the second student

T = 2π√L/g

T/2π = √L/g

(T/2π)² = L/g

(1/2π)² = L/9.8

9.8(1/2π)²  = L

0.25 m = L

25 cm = L

The difference in length of the pendulum is 25 cm - 12 cm = 13 cm.

Learn more about period of a pendulum here: https://brainly.com/question/26524032

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The complete question is below:

Find the difference in the length of the pendulum.