JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Sample Paper Topic Test - Work Energy Power

  • question_answer
    The force acting on a body moving along x-axis varies with the position of the particle as shown in the figure. The body is in stable equilibrium at:          

    A) \[x={{x}_{1}}\]

    B) \[x={{x}_{2}}\]

    C) both \[{{x}_{1}}\]and \[{{x}_{2}}\]

    D) neither \[{{x}_{\text{1}}}\]nor \[{{x}_{2}}\]

    Correct Answer: B

    Solution :

    [b] If a particle at \[{{x}_{1}}\] is displaced slightly towards left or right the force is in the same direction. Hence the equilibrium is unstable. Whereas at \[{{x}_{2}}\] the force is directed opposite to displacement.

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