My homework question reads: A wheel on a game show is given an initial angular s

Question

My homework question reads: A wheel on a game show is given an initial angular speed of1.22 rad/s. It comes to rest afterrotating through 3/4 of a turn. (a) Find the average torque exerted on thewheel given that it is a disk of radius 0.67 m and mass 6.4 kg.
I have tried going about the problem the waythe solution shows but have had no luck please help me! My homework question reads: A wheel on a game show is given an initial angular speed of1.22 rad/s. It comes to rest afterrotating through 3/4 of a turn. (a) Find the average torque exerted on thewheel given that it is a disk of radius 0.67 m and mass 6.4 kg.
I have tried going about the problem the waythe solution shows but have had no luck please help me! (a) Find the average torque exerted on thewheel given that it is a disk of radius 0.67 m and mass 6.4 kg.
I have tried going about the problem the waythe solution shows but have had no luck please help me!

Explanation / Answer

Initial angular speed w = 1.22 rad / s final angular speed w ' = 0 rad / s Angular displacement = ( 3/ 4) 2 rad =4.7123 rad radius R = 0.67 m mass M = 6.4 kg Torque = I where I = moment of inertia = M R ^ 2           = angular acccleration from the relation w ' ^ 2 - w ^ 2 = 2     wefind   value substitue these values in torque we get answer

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