Question

I want 20 examples of periodic and non periodic changes

Answer 1

Examples of periodic motion:  1. The motion of the bob of the simple pendulum 2. Motion of a planet around the sun 3. Motion of the tip of the minute and hour hands of a clock 4. Motion of a boy sitting in a swing 5. Motion of the needle of a sewing machine operating at constant speedExamples of non-periodic motion: 1. Swaying of the branches of a tree 2. Motion of a bouncing ball under the action of gravity and friction 3. The running of a batsman between the wickets 4. Motion of the pestle in a mortar when operated manually.