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April 16, 2014

April 16, 2014

Posted by **mymi** on Friday, October 21, 2011 at 12:04am.

(a) What is the initial angular speed of the tires?

(b) What is the angular acceleration of the tires? (Enter the magnitude only.)

(c) What distance does the truck travel before coming to rest?

- Physics. -
**Henry**, Saturday, October 22, 2011 at 5:05pmGiven: D = 1.1m., V0 = 30m/s, 49rev.

C = pi*D = 3.14 * 1.1 = 3.46m. = Circumference of tirs.

a. Vo = 30m/s * 6.28rad/3.46m = 54.5rad/s.

b. d = 49rev * 3.46m/rev = 169.3m =

stopping dist.

a = (Vf^2 - Vo^2) / 2d,

a = (0 - (30)^2) / 338.6 = -2.66m/s^2 =

Linear acceleration.

a = -2.66m/s^2 * 6.28rad/3.46m =

-4.82rad/s^2. = Angular acceleration.

c. d = 49rev * 3.46m/rev = 169.3m.

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