What is coulomb damping?

Q.  Which of the following statements is/are true for coulomb damping?

1. Coulomb damping occurs due to friction between two lubricated surfaces
2. Damping force is opposite to the direction of motion of vibrating body
3. For smooth surfaces, coefficient of friction depends upon velocity
4. Damping force depends upon the rubbing velocity between two rubbing surfaces
- Published on 11 Sep 15

a. Only statement 1
b. Statement 2, 3 and statement 4
c. Only statement 2
d. All the above statements are true

ANSWER: Only statement 2

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