Q1. Astronauts on a distant planet set up a simple pendulum of length 1.5 m. The pendulum executes simple harmonic motion and makes 107 complete vibrations in 398 s. What is the acceleration due to gravity?
Q2. A uniform solid sphere of radius 0.503 m and mass 15.7 kg turns counter clockwise (when viewed from above) about the vertical axis through its center. Find its vector angular momentum when its angular speed is 3.08 rad/s. Wouldn't you use the formula L=I*omega.