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NEET Sample Paper NEET Sample Test Paper-1

  • question_answer
    An iron block of sides \[5cm\times 8cm\times 25cm\] has to be pushed along the floor. The force required will be minimum when the surface in contact with ground is:

    A) force is the same for all surfaces

    B)  \[8\,cm\times 5\,cm\] surface

    C)  \[5\,cm\times 15\,cm\] surface

    D)  \[8\,cm\times 15\,cm\] surface

    Correct Answer: A

    Solution :

    Sides of block \[=5cm\times 8cm\times 15cm.\]. The force required to push the iron block is independent of the area of contact. Therefore required forces will be same for all the surfaces.


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