Lab: Paper Airplanes Worksheet (Page 4 of 4) in pdf

Lab: Paper Airplanes Worksheet Page 4

Part 2: Sliding Friction & Surfaces – How do different surfaces affect sliding friction?

Hypothesis: Of the surfaces listed, which will produce the greatest frictional force? ________________

Which will produce the smallest force? ________________

Procedures

1. Use a book cover or a ring binder to make a ramp.

2. Make the slope steep enough so that a metal washer will just slide all the way to the bottom.

3. Find the angle of the slope by placing a protractor perpendicular to the angle of the slope.

Use the picture & record the final angle in the data table.

4. Tape or hold one of the surfaces onto the binder & find the angle at which the same metal

washer will slide to the bottom.

Surfaces

5. Repeat steps 2-4, but with a rubber stopped instead of the

Aluminum Foil

washer.

Binder Paper

Bubble Wrap

Slope Angle –

Cloth

Surfaces

Metal Washer

Rubber Stopper

Construction Paper

Plastic Wrap

Aluminum Foil

Sand Paper

Binder Paper

Wax Paper

Bubble Wrap

Cloth

Construction Paper

Plastic Wrap

Sand Paper

Wax Paper

Analysis

1. Of the surfaces, which one required the smallest angle of slope for the ring to slide to the

bottom of the ramp? _________________ What makes that surface different from the others?

2. Of the surfaces, which one required the largest angle of slope for the ring to slide to the

bottom of the ramp? _________________ What makes that surface different from the others?

3. How did the slope angles change between the metal washer & the rubber stopper?

4. Are your results accurate or inaccurate? Explain.

Lab: Paper Airplanes Worksheet Page 4