Which of the following is not a correct state | vedclass

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(C) The work done by a conservative force is defined as $W_c = -\Delta U$, which is the negative change in potential energy. Thus, option $A$ is corre

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Work done by non-conservative force in a closed path is equal to zero

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(C) The work done by a conservative force is defined as $W_c = -\Delta U$, which is the negative change in potential energy. Thus, option $A$ is correct.Total energy of a system is conserved only if the system is isolated (no external work or heat transfer). In general, the total energy of a system is not always conserved if external forces act on it. Thus, option $B$ is a general statement that is often considered incorrect in the context of non-isolated systems.Non-conservative forces (like friction) dissipate energy. The work done by a non-conservative force in a closed path is not zero. Thus, option $C$ is definitely an incorrect statement.In stable equilibrium, the potential energy $U$ is at a local minimum, meaning $dU/dx = 0$ and $d^2U/dx^2 > 0$. Thus, option $D$ is correct.Comparing $B$ and $C$, $C$ is a fundamental property of non-conservative forces (they are path-dependent), making it explicitly false. Therefore, $C$ is the intended incorrect statement.

Which of the following is not a correct statement?

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