Question

When an object is moving, we use the following coefficient for friction calculations a)-μk b)-μs c)-γk d)- γs

Answer 1

Answer:$\mu_{k}$

Explanation:

We use kinetic friction when a body is moving i.e. $\mu_{k}$ for calculations.

Static friction is used when a body is in rest while kinetic friction is used when a body is moving and its value is quite low as compared to static friction .

Static friction value increases as we apply more force while kinetic friction occurs when there is relative motion between bodies.