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NEET Sample Paper NEET Sample Test Paper-46

  • question_answer
    Three equal weights A, B and C of mass 2 kg each are hanging on a string passing over a fixed frictionless pulley as shown in the figure The tension in the string connecting weights B and C is-

    A) Zero

    B)                    13 N

    C)                    3.3 N

    D)                    19.6 N

    Correct Answer: B

    Solution :

    Tension between \[{{m}_{2}}\] and \[{{m}_{3}}\] is given by \[T\,\,=\,\,\frac{2{{m}_{1}}{{m}_{3}}}{{{m}_{1}}+{{m}_{2}}+{{m}_{3}}}\,\times \,\,g\,\,=\,\,\frac{2\times 2\times 2}{2+2+2}\,\,\times \,\,9.8\,\,=\,\,13N\]


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