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Homework Help: I need help with a formula

  1. Dec 11, 2003 #1
    what formula do i need to solve this problem?

    A sled of mass 57 kg is pulled along snow-covered, flat ground. The static friction coefficient is 0.30, and the sliding friction coefficient is 0.10.

    What does the sled weigh?
     
  2. jcsd
  3. Dec 11, 2003 #2

    chroot

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    Force = mass * acceleration

    Weight = mass * g

    - Warren
     
  4. Dec 11, 2003 #3
    coefficients

    how do i find the coefficient of frcition?
     
  5. Dec 11, 2003 #4

    chroot

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    You don't need to find it. It's given. It's also irrelevant to the problem. The problem just asked you for weight -- all you need is mass and the acceleration due to gravity (9.8 m/s^2).

    - Warren
     
  6. Dec 11, 2003 #5
    oops

    oh, im sorry. maybe i should've been more specific. If I was just givin the force, the mass and acceleration. I'm not given the coefficient of friciton or the frictional force.
     
  7. Dec 11, 2003 #6

    chroot

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    I have no idea what you're asking. Are you talking about some new problem now?

    - Warren
     
  8. Dec 11, 2003 #7
    sorry

    yeah
     
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