FIGURE 8-3 A mass is attached to one end of a string. The other end of the string is attached to a rigid support. The mass is released at A and swings in a vertical arc to points B, C, and D, as shown in Figure 8-3. Neglect air resistance and use g = 10 m/ .
-Refer to Figure 8-3. At what point does the mass have the most potential energy?

Question

FIGURE 8-3  A mass is attached to one end of a string. The other end of the string is attached to a rigid support. The mass is released at A and swings in a vertical arc to points B, C, and D, as shown in Figure 8-3. Neglect air resistance and use g = 10 m/  .
-Refer to Figure 8-3. At what point does the mass have the most potential energy?

Quizplus · Accepted Answer

The potential energy of an object is given by mgh, where m is the mass, g is the acceleration due to gravity, and h is the height above some reference point. At point A, the mass is at its highest height, and therefore has the most potential energy. At points B, C, and D, the mass is lower than at point A, and therefore has less potential energy.

FIGURE 8-3 a Mass Is Attached to One End