Final answer:
A physics textbook can indeed swing back and forth as a pendulum.
Step-by-step explanation:
True. A physics textbook swinging back and forth as a pendulum is a valid statement. A pendulum is a simple harmonic oscillator that consists of a mass (in this case, the textbook) attached to a light string or wire and is free to swing back and forth under the influence of gravity.
For small displacements, a pendulum experiences simple harmonic motion, where its restoring force is directly proportional to its displacement. Examples of pendulums in everyday life include old-fashioned clocks, swings, and sinkers on fishing lines.
In conclusion, a physics textbook can indeed swing back and forth as a pendulum.