Adjusting Pendulum Length to Correct a Grandfather Clock

In this video, I walk you through solving a problem related to adjusting the length of a grandfather clock's pendulum to correct for a time loss of 21 seconds per day. We explore the relationship between time, length, and the period of a pendulum, and I guide you through the calculations needed to find the new length. Please pause the video at key points to work through the problem and compare your answers with mine. Giancoli Physics, AP Edition, 7th Edition, Chapter 11, Problem 31