1. In Part 1, did the force of
friction on the shoe depend on the weight of the shoe? If the two are related,
why are they? What is the slope of the line on the graph of force of friction
vs. weight, and what does that number represent? Explain using your data.
The equation for the force due to
friction is F=uN=umg
from this equation we can see
that u is the coefficient of friction and N is the normal force
The normal force is the weight of
the object so N=mg
We can see the relationship from
The more the force the more the
friction since the force is higher the downward force is more thus the object
.So the friction on the shoe does depend on the weight.
On our graph with force of
friction vs weight the slope is basically the value on the y divided by the x
Which in this case is the force
of friction divided by the weight
From our values if we divide the
force of friction by the weight we get the coefficient of friction
So the slope of the graph represents the coefficient of friction.
2. Does an athletic shoe work better
on a basketball court than a dress or dance shoe? Why or why not? Explain using
data from Parts 1 and 2.
Answer: Friction depends on the nature of the surfaces and the force
pushing the surfaces together. I believe the athletic shoes would work better on a basketball court
when compared to a dress/dance shoes because the athletic shoes has a higher k
value when compared to the dress/dance shoes, which causes a good grip between
the court and the shoes and avoids sliding or slipping as the friction coefficient is higher as well as the consequent friction
force. A lower coefficient of friction between the surface and shoes makes it
uneasy for an athlete to perform as good as when there is a high coefficient of
force as lower coefficient makes it more difficult as there are higher chances
for the shoe to slide on
the court. Shoes affect our performance and how
we function. Also an athletic shoe would create more friction and also the
surface of the floor will give you a coefficient of friction that varies with
the combination of shoe and ground/floor.
3. If you wanted the athletic shoe
to slide faster on a surface, what might you do to the shoe? Provide at least
two ways to make the shoe slide faster, and explain in terms of the force of
friction and the coefficient of friction.
Answer: In order
to allow the athletic shoes to slide faster on the surface we can either
lubricate it by apply oil or grease at the bottom of the shoes, which causes a
lower coefficient of friction which causes the shoes to slide off due to lower
contact between surface and shoes. The other way to change the material of the
soul of the shoes to a material, which causes a lower coefficient of
friction.what we have to remember is to reduce the k value in order to allow
the shoes to slide faster .