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Coulomb friction is the friction between

Answer & Solution
Correct Answer: Option B
Coulomb friction, also known as dry friction, is the friction that occurs between two dry surfaces in contact with each other. It is called "dry" friction because it applies to surfaces without any lubrication or liquid film between them.

Therefore, the correct answer is Option B: Two dry surfaces. This option accurately describes the type of surfaces between which Coulomb friction occurs. Coulomb friction is a fundamental concept in engineering mechanics and is commonly encountered in various mechanical systems and applications.

Options A, C, and D do not correctly describe the nature of Coulomb friction.
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4 Comments
Shaikh Salman
Shaikh Salman 3 years ago
B right answer
MUZAFAR HUSSAIN
MUZAFAR HUSSAIN 6 years ago
it is the friction between two dry surfaces. the answer given is incorrect.
Sarveshwer Chandra
Sarveshwer Chandra 6 years ago
Two dry surfaces
Ravi SHANKAR
Ravi SHANKAR 6 years ago
Answer is B