Question

Explain what is happening when the girl is at each point. **The girl has started at 1 and goes to 4.

Answer 1

point 2-1 and 2-4: Amplitudo

point 2-3: deviation

point 2: equilibrium

point 1 and 4: PE max, KE=0, EM=PE

point 2: KE max, PE=0, EM=KE

Answer 2

At point 1, the girl is gaining is gaining velocity towards due to gravity and the swing. At point 2, the girl has no gravity pulling her down. At point 3, the girl depends on her forward velocity gained from the gravity to move forward. At point 4, the girl exhausts its forward velocity and she goes back due to gravity/