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Math Help - Please help solving this physics problem

  1. #1
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    Smile Please help solving this physics problem

    If F is 400 N and S=2m^2, find the pressure(P) ?
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  2. #2
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    P = F/A

    In this case, A = S = area
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  3. #3
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    what does S mean,displacement?
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  4. #4
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    From the unit given, it's area
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  5. #5
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    Quote Originally Posted by jashansinghal View Post
    what does S mean,displacement?
    S cannot be displacement because it has dimensions of (Length)^2 whereas displacement has dimensions of (Length). This means that S is an area of some kind although it is more usual to use A to denote an area

    P = \frac{F}{A}cos \alpha where \alpha is the angle between the force and the vertical and will be measured in Pa or Nm^{-2}

    In your example it's probably a perpendicular force so cos \alpha = 1 and it reduces to P=\frac{F}{A}
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