The analysis of a simple pendulum assumed that the mass was a particle, with no size. A realistic pendulum is a small, uniform sphere of mass M and radius R at the end of a massless string, with L being the distance from the pivot to the center of the sphere. a. Find an expression for the period of this pendulum. b. Suppose M = 25 g, R = 1.0 cm, and L = 1.0 m, typical values for a real pendulum. What is the ratio Treal /Tsimple, where Treal is your expression from part a and Tsimple is the expression derived in this chapter?

Lecture 2 1 iClicker question Y ou place same two charges a distance r apart. Then you double each charge and double the distance between the charges. How does the force between the two charges change a) The new force is twice a large. b) The new force is half as large. c) The new force...