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A 24kg object who’s moment of inertia equals 1/3MR^2 rolls down a ramp and when released...

A 24kg object who’s moment of inertia equals 1/3MR^2 rolls down a ramp and when released from rest it rolls without slipping. It Rolls 3.4 times and it takes 5 seconds to roll down the ramp who’s length is 22.3m. What is the radius of the object, how high was the object when released, if it was a block and slid on a frictionless surface how long would it have taken to get down, what would the coefficient of friction be for a block if it took the same time as the object to roll down

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