23) A simple pendulum of length 2.58 m is used to measure the acceleration of gravity at the surface of a distant planet. If the period of such a pendulum is 9.18 seconds, what is the acceleration of gravity? A) 23.7 m/s2 B) 1.21 m/s2 c) 1.77 m/s2 d) 0.83 m/s2 e) 2.42 m/s2

What is the length of a pendulum that has a frequency of 0.35 Hz (on Earth)? a) 1.0 m b) 1.5 m c) 2.0 m d) 2.5 m e) 3.0 m

A yo-yo oscillates up and down like a sine function y(t)=sin(t). a) What is the displacement over the time interval [0,6π]?   b) What is the total distance traveled by the yo-yo over the same time interval?   c) What is the minimum velocity of the yo-yo? Minimum speed?   d) At what part of the cycle is the yo-yo increasing in speed but decreasing in velocity?

Thank you in advance!