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Hypothesis: I can calculate a believable μ for an incline plane ride.

Introduction: Fll is not a real force, but merely the sum of the normal force and weight. Normal force is the force of the object parallel to the surface, and the weight is mass multiplied by gravity on Earth. Using theta, can calculate Fll and Fn (normal force). Also, in the following problem (Ex. 1), notice that the μs is always greater than the μk.

Ex. 1) We can connect Fll and Fn with Newton's second law: ΣF=ma.
m= 10.0 kg θ= 34.0 º μs=.400 μk=.200

a.) What is Fll?
b.) What is N?
c.) What is Ff for rest?
d.) Does the child move? (Yes, if Fll > Ff)
e.) What is Ff for motion?
f.) What is the acceleration for the sliding child?

Procedure: See lab book.

Data:

Time Distance θ vi a μ
Trial 1 4.0 s 12 m 40º 0 1.5 m/s2 64 x 10-2 m/s2
Trial 2 4.0 s 12 m 40º 0 1.5 m/s2 64 x 10-2 m/s2
Trial 3 5.0 s 12 m 40º 0 96 x 10-2 m/s2 71 x 10-2......

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Approximate Word Count: 392
Approximate Pages: 2 (250 words per double-spaced page)

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