题目
UCIC 202503 PHYS101 Quiz 2
单项选择题
What does a coefficient of friction depend on? What does a coefficient of friction not depend on?
选项
A.a. It depends on the contact surfaces, it does not depend on the area of contact
B.b. It depends on the object’s weight, it does not depend on the object’s size
C.c. It depends on the object’s size, it does not depend on the object’s weight
D.d. It depends on the area of contact, it does not depend on the surfaces
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标准答案
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思路分析
To approach this question, I’ll evaluate what the coefficient of friction (mu) actually depends on and what it does not depend on.
Option a: 'It depends on the contact surfaces, it does not depend on the area of contact.' This is correct in physics: mu is determined by the materials and surface textures in contact, not by how large the contact patch is. The frictional force ......Login to view full explanation登录即可查看完整答案
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