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- 1. Test Your Understanding: 1. Consider two pendulums. Pendulum 1 has a string of shorter length than Pendulum 2 and Pendulum 2 has a object mass greater than Pendulum 1. Which of the following is true? a.) Pendulum 1 has a greater period than Pendulum 2 because it has a smaller mass. b.) Pendulum 2 has a greater period than pendulum 1 because its string has a longer length. c.) The period of the two pendulums cannot be compared without more information. d.) The two pendulums have the same period. 2. A pendulum has a mass m and a string length of L. What will happen to its total energy if L is doubled? a) Increase by a factor of 2 b) Decrease by a factor of 1 2 c) Increase by a factor of √2 d) Decrease by a factor of √ 1 2 e) No change. 3) A pendulum has a mass m and a string length of L. What will happen to its total energy if m is halved? a) Increase by a factor of 2 b) Decrease by a factor of 1 2 c) Increase by a factor of √2 d) Decrease by a factor of √ 1 2 e) No change.
- 2. Answers: 1.b 2.a 3.d