Question

Problem 13

Answer 1

Given information

We are given that, a clock uses a pendulum supported on a long thin brass rod that is accurate at  running fast or slow on a hot day ()

Step-by-step explanation

Step 1.

On a hot day, the pendulum will be slightly longer than at , due to the thermal expansion of the brass rod. Since the period of a pendulum is proportional to the square root of its length, the period will be slightly longer on a hot day, meaning that the pendulum takes more time for one oscillation. Thus, the clock will run slow.