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Need Help with these problems

  1. Nov 26, 2007 #1
    ok guyz i been trying to figure out how to do these following problems for hours and after searching online for help i came upon these site. Hope you guyz can help me.

    ok the problem is following
    1. You can accelerate a 2 kg. Axe head to a final velocity of 25 m/sec in a circular path from apex to impact (90 degree of rotation, 1/4 of a circle) on a good swing. It takes you 3.0 second to swing the axe with a radius of 1.0 . Find the following
    1. The Rate of acceleration
    2. The rate of centripital acceleration
    3. the weight of the axe head
    4. The force at impact that is applied to the turkeys neck (acceleration from #1)
    5. The force that the turkeys neck applied to the axr
    6. The centripital force on the axe

    2. for #1 i am thinking using the following formula https://www.physicsforums.com/latex_images/90/905663-1.png [Broken]
    for #2 its V^2/r
    #3 i have no idea
    #4 F=ma
    #5 i am not sure
    #6 Fc= mv^2/r

    3. The attempt at a solution

    for #1] i got 25/.3= 83.33
    #2] 25^2/1 = 625
    #3] i don't know what formula to use
    #4] F=m*83.33 [don't know the mass from #3
    #5] i am not sure which formula to use
    #6] F= 2*25^2/1 = 1250 [thinking the mass is 2]

    Not sure if all these are right if someone can help me with it, it would be great.
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Nov 26, 2007 #2
    any help please
  4. Nov 26, 2007 #3


    User Avatar

    you have to use some formulas to solve this problem, and check you book to find the formulas.

    Thank you
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