A. Coin Drop
1. Arrange the setup as shown in Figure 7.
2. Slowly pull the cardboard with your hand and
observe what happens
3. Arrange again the setup as shown. This Time
quickly flick the cardboard with your Finger.
Observe again what happens.
Guide Questions:
a. What happens when you slowly pulled the cardboard? Explain.
b. What happens when you flicked the cardboard? Explain.
B. Stack of Coins
4. Stack the coins on a flat level surface
5. Quickly hit the coin at the bottom with the edge of the ruler
Guide Question:
c. What happens when you hit the coin at the bottom? Why is this so?