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Homework Help: Kinematics/Dynamic Question

  1. Sep 1, 2012 #1
    Kinematics/Dynamic Question!!

    1. The problem statement, all variables and given/known data

    A bartender slides a glass of beer down a bar with an initial velocity of 2m/s. The coefficient of kinetic friction of the bar is 0.05 and the length of the bar is 3m and the height of the bar is 1m. The mass of the beer is 0.5kg. How far from the bar will the glass hit the ground?

    2. Relevant equations

    Not sure which equation to use.

    3. The attempt at a solution

    I tried to find out the frictional force and its 0.25N after drawing a free body diagram for the glass of beer. I named the distance we have to find from the bar when the glass hits the ground x. Therefore, the total distance travelled by the bar will be (3+x).

    I'm stuck after that.

    Thank you for anyone who can help me!!
  2. jcsd
  3. Sep 1, 2012 #2
    Re: Kinematics/Dynamic Question!!

    You have initial velocity.
    There is a force that changes this velocity.
    Find the final velocity at the edge of the table.

    Use projectile equations.
    Last edited: Sep 1, 2012
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