negative friction

Is Coefficient Of Friction Always Positive?

by

Is Coefficient Of Friction Always Positive? But the magnitude of friction is always positive. It is positive by definition. The magnitude of any force (or any vector) is positive. In your question you meant to say friction acting in the same direction as the applied force/direction of impending motion. Is negative friction possible? That cannot

Can A Coefficient Of Friction Be Negative?

by

Can A Coefficient Of Friction Be Negative? Negative friction coefficients arise when the friction force increases with decreasing load. … A negative friction coefficient is therefore a special case of the common phenomenon of hysteresis in the adhesive interaction between two surfaces during a loading–unloading cycle4 , 5. Is coefficient of friction always positive? But