physics

posted by Vitus

An automobile travelling with an initial velocity of 25m/s is accelerated to 35m/s in 6 second. The wheel of automobile is 80cm in diameter. Find the angular acceleration

  1. bobpursley

    radius= .4m

    wi=25/.4 wf= 35/.4

    angacceleration= (wf-wi)/time

  2. David

    From the Eqn of motion we have: v=u+at
    =25+35*6
    =360m/s
    recall that angacceleration=v^2/r
    r=40m,
    =360^2*40
    =3240m/s^2

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