iClicker Questions

1. What is the description of the motion of the pendulum after it is released from the height (h) with the string length (L)?a) The pendulum will continue its motion forever without stoppingb) The pendulum will reach a higher height (h) as it reaches its top speedc) The pendulum’s motion will slowly slow down due to the force of gravityd) The pendulum will stop at the lowest height (h) without doing any

oscillations due to the strong force of gravity

Answer: CThe motion of the pendulum will slowly decrease due to the force of gravity on the pendulum until it fully stops

2. What is the period of the pendulum with a string length of 0.04 m and the acceleration due to gravity of 9.81 m/s^2?a) 0.34 secondsb) 1.56 secondsc) 1.35 secondsd) 1.33 seconds

Answer: C

Using the formula for finding the period of a pendulum: T = 2 * (L/g)^0.5πT = 2 * (0.45m / 9.81m/s^2)^0.5π = 1.35 seconds