Experiment 2: Conservation of Energy

In this experiment you will explore The Law of Conservation of Energy.

 

Materials

Masking Tape

1 Ping Pong Ball

Tape Measure

*2 Sports Balls (Basketball, golf ball, etc.)

 

 

*You Must Provide

 

Procedure

1. Find a room with a hard, flat surface that you will be able to drop a ball on.
2. Hint: The harder the surface the better.
3. Using the tape measure, measure 0.50 meters above the flat surface. Use masking tape to secure the
4. tape measure to the wall so you will be able to read the height of the ball.
5. Take the ping pong ball and place the bottom of the ball at the 0.50 meter mark.
6. Drop the ball and record the height the bottom of the ball reaches after one bounce in Table 2.
7. Repeat Steps 3 - 4 two more times for the ping pong ball.
8. Repeat Steps 3 - 5 for two other balls of your choice.

Ping Pong Ball

.26m 

 .27m

.25m 

average height (m)= .26m 

Golf Ball

.28m 

 .31m

.29m 

average height (m)=  .29m

 Volley Ball 

.08m 

.05m 

 0.07m

average height (m)=  .20m

 

 

 

Post-Lab Questions

Table 3: Mass of Common Types of Sports Balls

1. Use the following values to calculate the potential and kinetic energy of each ball during different stages of its motion. Record your data in Table 4.

Ball Typ Mass (kg)

Ping Pong ball

0.0027

Racquetball

0.042

Golf ball

0.045

Tennis ball

0.057

Soccer ball

0.43

Basketball

0.62

 

The different stages of motion: are PE(0.5m), KE(before bounce), PE(new max height), TE, KE(after bounce)

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