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Vertical force

  1. May 16, 2016 #1
    1. The problem statement, all variables and given/known data
    A truck (mass 12000 kg) carries a load of 16000kg. What vertical force is exerted on the road by each wheel assuming the mass is uniformly spread?

    2. Relevant equations
    F=ma



    3. The attempt at a solution
    12000kg+16000kg=28000kg total mass
    28000/4=7000kg to get mass on each wheel

    F=ma 7000kgx9.81=68670 N
     
    Last edited: May 16, 2016
  2. jcsd
  3. May 16, 2016 #2

    gneill

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    Staff: Mentor

    Those numbers in the problem statement are given using scientific notation, although the powers of ten are missing the superscript for the exponents. So for the truck mass, for example, 1.2 x 104 kg should read: 1.2 x 104 kg, which is equivalent to 12000 kg.

    Fix your starting numbers accordingly and retry your calculations.
     
  4. May 16, 2016 #3
    I have made the changes is the method i used correct though?
     
  5. May 16, 2016 #4
    I have another question and I have no clue on how to attempt this one

    The lorry starts from rest with an acceleration of 2 ms-2.
    What is the effective thrust is being exerted?
     
  6. May 16, 2016 #5

    gneill

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    Staff: Mentor

    The method is okay and will deliver the correct result.

    If it were me doing the problem I would probably find the total mass then convert that to total weight (multiply mass by g) before finally dividing by four to find the weight (force) supported by each wheel.
     
  7. May 16, 2016 #6

    gneill

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    Staff: Mentor

    Please start a new thread for a new question.
     
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