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Homework Help: Motion and force

  1. Apr 3, 2009 #1
    1. The problem statement, all variables and given/known data
    Q 41 and 42 in the given image.

    2. Relevant equations
    Don't know what should be here.

    3. The attempt at a solution
    I wasn't able to start the question also since I don't know the basics of these questions but still these are coming in our entrance exams.

    Attached Files:

  2. jcsd
  3. Apr 3, 2009 #2


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    Staff Emeritus
    Science Advisor
    Homework Helper

    Welcome to PF.

    Generally, we do want to see people list relevant equations and give a try at solving the problem before getting help.

    That being said, these problems involve conservation of energy, kinetic energy, and/or potential energy. What equation(s) are related to those concepts?
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