Solve Kinetics Homework Question | t=17.5, 11.3s

[Solidsam]

Homework Statement

I trying to do this hibbeler question which I have modified a bit

However I'm not getting the correct answers which is supposed to be t=17.5 and t=11.3 s

I will take a picture of my attempt when I get a hold of a camera in the meantime if anyone knows how to do it I would be grateful if you could post how it's solved

 

[NascentOxygen]

I'll wait to see your answer.

 

[HyperSniper]

It looks like the basic procedure is going to be to take the applied torque (from the dimensions given), convert it to force, and then balance that force against the frictional force. Repeat for the for the four wheel drive instance.