Changes

#[[test 3.2| Problem 10.2]]

#[[test 3.2| Problem 10.2]]

[[test 4| POTENTIAL ENERGY]]

[[test 4| POTENTIAL ENERGY]]

[[test 5| RELATION BETWEEN MASS HEIGHT AND POTENTIAL ENERGY OF A BODY]]

[[test 5| RELATION BETWEEN MASS HEIGHT AND POTENTIAL ENERGY OF A BODY]]

*[[test 5.1| Example 1]]

*[[test 5.1| Example 1]]

*[[test 5.2| Example 2]]

*[[test 5.2| Example 2]]

[[test 6| CHANGE OF ENERGY]]

[[test 6| CHANGE OF ENERGY]]