# REALLY need HELP to solve the problem

• oliviecheng
In summary, the conversation discusses an experiment that was conducted to determine the force of friction on different surfaces. The results showed that the wooden block had a smaller frictional force compared to plastic or glass. The participants then questioned if the frictional force would be smaller if the same material was used, but it was noted that the crests on the wood could make it more difficult to move. The conversation then shifts to a homework problem involving calculating the coefficient of kinetic friction between a wooden crate and the floor.
oliviecheng
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

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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