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A tire on a truck with a 25-cm radius is rotating as the truck moves along...

A tire on a truck with a 25-cm radius is rotating as the truck moves along a road at 45 mph. The truck then applies its brakes so that the truck come to rest over a time of 5 seconds. Angular acceleration is assumed.

A.) Calculate the magnitude of the angular acceleration of the tire during this time period in rad/s^2

B.) Calculate how many total revolutions the tire experienced during this time period.

C.) If the tire has a mass of 35 kg. How much torque is being applies to the tire during braking? I = m*r^2 for the tire

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Answer #1

35 Solution - sleg Radieu of tire r= asum= 0.25 m Speed = 45mpe=45(1609.344 metra 36oos it - 20:1168 ml After tss Vcom om g.C.) Moment of inerhia of to I= mr² = 35x0.252 I d. 1875 legm? So torque Za Ilal -2.1875X16.09 z = 35.2 Nm

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