1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Acceleration of a car when given torque and mass

  1. Jun 14, 2012 #1
    A car has a mass of 1200kg and delivers a total of 2300Nm of torque.
    Tyre radius of 0.306m.
    What is the acceleration of the car in m/s^2?
    What is the speed of the car if it has accelerated for 11 seconds? (determained in first question),

    I have looked at a few and still a bit stuck.
    and then convert to m/s^2
    W=(fcos theta)(d)

    Attepted both and seem to still be getting the wrong answer..
    A= 1200*0.306
    = 367.2m/s^2

    = (1626.35)(0.612)
    = 995.3262

    As you can see i am well off the right answer. I am more incline to think it is the equation A=m*R...
    Please help!!
  2. jcsd
  3. Jun 15, 2012 #2

    How many newtons of force are applied to the auto when when 2300n-m of torque are applied to a tire of 0.306m radius?

  4. Jun 15, 2012 #3
    Newtons of force.... Would that be the mass...? soo 1200kg or 11767.98 N.
    Is this what you mean?
  5. Jun 15, 2012 #4

    In the MKS system, force is measured in newtons, mass is measured in kilograms.

  6. Jun 15, 2012 #5
    All the information given in the question is what i posted before...
    Is there any way that i can figure this out with the given information..?
    Please help i am extremely stuck...

  7. Jun 15, 2012 #6

    Do you know what torque is?

  8. Jun 15, 2012 #7
    I have the understand torque is the mesument of power around a pivot point...
    I am not entirly sure, this is proberbly why i am haveing trouble with the question..
  9. Jun 16, 2012 #8

    You need to read a good physics book and find out what torque really is. Then the answer to my question in post #2 will become clear.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook