Problem 25.10
Please wait for the animation to
completely load.
A charged ball with a mass of 30 grams is suspended from a string as shown. A
second ball with a negative charge of 3 mC is placed on a wood table. Play the
animation and move the ball on the table toward and away from the pendulum
(position is given in meters and time is given in seconds). Restart.
- Find
the equilibrium point of the pendulum for two different positions of the ball on
the table.
- Write an expression for the change in potential energy (both
gravitational and electrostatic) from one equilibrium position to the other.
- What is the
charge on the pendulum? Assume that the charge on the two balls is
uniformly distributed.
© 2004 by Prentice-Hall, Inc. A Pearson
Company