Determine how potential and kinetic energy changes at each position of the pendulum as the ball swings from a to e. position a: position b: position c: position d: position e:

Answer;

Position A: Maximum potential  and minimum kinetic energy

Position B: losing potential and gaining kinetic  

Position C: Maximum kinetic  and minimum potential energy.

Position D: is losing kinetic and gaining potential  

Position E: Maximum potential and minimum kinetic energy.

Explanation;Position A is a point of maximum potential energy and minimum kinetic energy since it is the highest point of the pendulum.Position B, which is half way between A and C, the ball is losing potential energy and gaining kinetic energy. This occurs as the ball descends from the highest position to the lower position thus looses potential energy and gains kinetic energy.Position C is the point of maximum kinetic energy and minimum potential energy. Because this is the lowest point of the pendulum and a point where the ball has maximum velocity.At position D which is half way between C and E, the potential energy is increasing as the kinetic energy is decreasing. At this point the ball has half of its maximum potential energy. At position E, he potential energy of the pendulum reaches its maximum value and is neither increasing nor decreasing at that point.