Investigation of Different Static and Frictional Coefficient Forces

De Vos Malan High School, Kingwilliamstown,
Eastern Cape

Learner: Lwandolwethu Ntlube Grade 11

Educator: Mrs Weweje

Learning Area: PHYSICAL SCIENCE SCIENTIFIC REPORT

Title: INVESTIGATION OF DIFFERENT STATIC AND FRICTIONAL COEFFICIENT FORCES

Part One

Hypothesis

1. Wood- 25 degrees

2. Plastic- 10 degrees

3. Aluminium- 19 degrees

4. Glass- 23 degrees

5. Fine Sandpaper- 41 degrees

6. Coarse Sandpaper- 30 degrees

Results

|Column 1 |Column 2 |Column 3 |Column 4 |
|Material on wood |Predicted arrangement |Magnitude of angle of slip |Arrangement according to results |
|Wood |10 |29 |Plastic-15 |
|Plastic |19 |15 |Aluminium-19 |
|Aluminium |23 |19 |Glass-24 |
|Glass |25 |24 |Wood-29 |
|Fine sandpaper |45 |49 |Coarse sandpaper-33 |
|Coarse sandpaper |41 |33 |Fine sandpaper-49 |

Interpretation of results

1. Wooden block

2. Wooden block on various materials e.g. wood on plastic

3. Protractor and wooden block due to the constant changing of positions.

4. Tyres.

5. Body of the car so that car is easily controlled.

6. Replace sliding friction with rolling element friction, such as with the use of rolling element bearings or