MECHANICS - APPLICATIONS OF NEWTON'S LAWS - FRICTION NC State University Faculty Access

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Area Dependence of Friction
# 1K20.20


Description: Slide a block on its flat side and measure the force of friction. Flip the block to its side with feet and measure again. The surface area ratio is about 10:1

Parts: sliding block, Newton meter

Purchased/Built: built

Quant. in Demo Room: 1

Demo References
The Video Encyclopedia of Physics Demonstrations Disc 03-03 A 2X12 is pulled along the bench top while resting on either the narrow or wide face.
Sutton M-49 Friction independent of area of contact - cut a block to form a prism whose cross section is an irregular polygon.

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