In the case of a swinging pendulum, potential energy is greatest when question 7 options: a. the pendulum ball is at its highest points away from a surface. b. the pendulum ball is at its lowest point closest to a surface. c. the pendulum ball is midway between its highest and lowest points from the surface. d. none of the above

The correct answer is:

A. the pendulum ball is at its highest points away from a surface.

Explanation:

the potential energy of an object is given by

where m is the mass of the object, g is the gravitational acceleration, and h is the height of the object from the ground. Looking at the formula, we see that the potential energy is higher when h is higher, therefore when the pendulum ball is at the highest point away from the surface.

3.2x10^7

not too sure thinking all accelerations are pointed down