How is friction affected by Mass?

Group 6

Hypothesis

• Mass is directly proportional to Friction

Set-up & FactorSet-up• Wooden Block (160g) x5• Newton Balance x1• Rope

Factor• Independent Variables:• Mass

• Dependent Variables:• Friction

• Control Variables:• Pressure• Contact Surface Area• Humidity & Temperature

Experiment

1. Rope the wooden block with a rope2. Pull the first block with Newton Balance3. Add one more block on the top4. Repeat the action until the last block was

added to the top

5. Record the Max. Friction when the block moves in each test

1 Wooden Block

1.1N

2 Wooden Block

2N

3 Wooden Block

3.1N

4 Wooden Block

4.2N

5 Wooden Block

5.4N

DataMax. Friction / N

0 100 200 300 400 500 600 700 800 9000

1

2

3

4

5

6

Mass / g

Friction is Directly Proportional to Mass