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Conservative and non-conservative forces: statements and examples

This type of question, asked 3 times: 28 Jan 2025, 7 Apr 2025, 22 Jan 2026 S2. All 3 questions below, oldest first.

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  1. Question 1

    28 Jan 2025

    11
    Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason RR Assertion A: In a central force field, the work done is independent of the path chosen Reason R: Every force encountered in mechanics does not have an associated potential energy. In the light of the above statements, choose the most appropriate answer from the options given below

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  2. Question 2

    7 Apr 2025

    91
    Which one of the following forces cannot be expressed in terms of potential energy?

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  3. Question 3

    22 Jan 2026 S2

    16
    Given below are two statements : Statement I: An object moves from position r1r_{1} to position r2r_{2} under a conservative force field F→\overrightarrow{F}. The work done by the force is W=−∫r1r2F→⋅dr→W = - \int_{r_{1}}^{r_{2}} \overrightarrow{F} \cdot \overrightarrow{dr}. Statement II : Any object moving from one location to another location can follow infinite number of paths. Therefore, the amount of work done by the object changes with the path it follows for a conservative force. In the light of the above statements, choose the correct answer from the options given below :

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