Frictional forces and potential energy – Rankers Physics

Potential Energy & Equilibrium: Practice Problem & Solution

Assertion (A): Frictional forces are conservative forces. Reason (R): Potential energy can be associated with frictional forces.  
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Potential Energy & Equilibrium. Understanding the underlying formula is key to arriving at the correct answer below:

Frictional forces are non-conservative forces because the work done by them depends on the path taken and energy is dissipated as heat. Potential energy can only be associated with conservative forces (e.g., gravitational, elastic).

Therefore, both assertion and reason are false.

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