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Analytical method of vector addition

  1. Apr 13, 2013 #1
    1. The problem statement, all variables and given/known data
    Joe pushes on the handle of a 10 kg lawn spreader. The handle makes a 45° angle with the horizontal. Joe wishes to accelerate the spreader from rest to 1.39 m/s in 1.5s. What force must Joe apply to the handle? Neglect friction.


    2. Relevant equations
    A=Vf-Vi/t. F=ma


    3. The attempt at a solution
    i calculated the acceleration being 1.39-0/1.5= 0.927m/s squared.
    i honestly don't know what to do next, please help.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Apr 13, 2013 #2

    SammyS

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    What is the direction that acceleration must have?
     
  4. Apr 14, 2013 #3
    looking at a free body diagram on the page of the lawn spreader, the acceleration is going →.
     
  5. Apr 14, 2013 #4

    SammyS

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    Correct.

    So the horizontal component of the force must be able to produce that acceleration.
     
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