Does Wood on Wood Increase Frictional Force Compared to Other Surfaces?

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Homework Help Overview

The discussion revolves around the frictional forces experienced by wooden surfaces in comparison to other materials, specifically focusing on the interaction of wood on wood versus wood on plastic or glass. The original poster presents experimental findings and questions the nature of friction when identical materials are in contact.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between surface materials and frictional force, with one questioning whether wood on wood would yield a different frictional force compared to wood on smoother surfaces like plastic or glass. There is also a consideration of the physical characteristics of wood, such as crests, that may affect movement.

Discussion Status

The discussion includes a mix of skepticism regarding the original poster's experimental results and a request for clarification on the problem presented. Some participants express concern over the validity of the results based on preconceived notions of friction.

Contextual Notes

One participant has introduced a separate homework problem involving the calculation of the coefficient of kinetic friction, indicating a need for assistance with a specific numerical question. This introduces a potential shift in focus from the original topic of frictional forces between materials.

oliviecheng
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i have done an experiment to find the force of friction on several surfaces.but i found that the wooden block used can move in a smaller frictional force than on plastic or glass
Will the frictional force be smaller when the same material is used(wood on wood)?but there are many crests on wood, when the wooden block moves, crests will hit crests and make the block more difficult to move.
i suppose the frictiional force(wood on glass or plastic)is smaller then that of wood on wood
 
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It is not clear to me, what your question is.
 
Your only "problem" seems to be whether to trust your results. I would consider it very bad science to refuse to accept the results of an experiment because of some notion of what "should" happen.
 
need help with homework pleasez help

al right the problem is (If u use a horizontalforce of 30.0N to slide a 12.0-kg wooden crate across a flor at a constant velocity, what is the coefficient of kinetic friction between the crate and the floor?) PLz help answr fast its due tmrw ahhhhh!
 

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