Figure 2 shows a marble which is on a curved rail. Then, it is pushed down the rail.
(a) What energy does the marble have when it is at position P? Why?
(b) What is the conversion of energy experienced by the marble at position Q?
(c) What energy does the marble have when it is at position R? Why?
5. Figure 3 shows a pendulum bob at position X. It is then released and it swings to position Y and Z.
(a) Describe the energy contained in the pendulum bob when it is at the following positions. Explain briefly your answer.
(b) Describe the energy change when the pendulum bob swings from:
Enrichment Exercises
1. The unit of energy is
2. What are the factors that affect the magnitude of kinetic energy?
I Mass of object
II Speed of object
III State of object
IV Position of object
A I and II only
B III and IV only