Answered: Notice that as soon as the crate begins…

Name: 3. Notice that as soon as the crate begins to move, it starts to accel
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Description: 3. Notice that as soon as the crate begins to move, it starts to accelerate. Can you explain why? After it starts to move, what is the minimum applied force to keep the crate moving at a constant velocity? 4. After the crate starts to move, how

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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3. Notice that as soon as the crate begins to move, it starts to accelerate. Can you explain why? After it starts to move, what is the minimum applied force to keep the crate moving at a constant velocity? 4. After the crate starts to move, how will increasing of applied force affect friction force on the crate? Acceleration of the crate? Can you explain why? 5. How does increasing the mass of the crate affect the maximum static friction and kinetic friction on it? 6. How does increasing the mass of the crate affect the coefficient of static friction and coefficient of kinetic friction on it? Is the simulation result consistent with the theory of the friction forces introduced in the class?

aIS8 check the same boxes. Now stack another crate of same mass on top
of the first one. Repeat step 1-3. Record your data in Table 2
friction f-9AN
Table 1
Table 2
Mass of
Maximum static
Kinetic
Mass of
Maximum static
Kinetic
Crate m(kg) friction fs.max (N) friction fr(N)
Crate m(kg) friction fs.max (N) friction fg (N)
50kg
126N
94N
lookg
251N
188N
app ried force: 126N
Analysis: (Question 1-4 is based on data from Table 1, question 5-6 is based data from Table 2.
1. Draw the free body diagram of the crate when it is in motion. Calculate the (static coefficient
of friction) with the information in Data Table 1 fre Mk Xn
30A9.8= 490 N
FN
126
☆ fs= Ms ans Fx= mg
= 0.257
max
50X9.8
fimax
Ms= 0 26
mg
2. Calculate µk (kinetic coefficient of friction) with the information in Data Table 1:
fx= Mk X n
Mk = 0-19
94 = MKX 50x 98
%3D
KTnetic Coelficent 94
= 0.192 o. 19
of forction.
50x9.8
2

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