Rotational Inertia Hill Problem

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cnfsdstudent
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A bicycle wheel is rolled down a hill that is 8 m high, Determine the linear speed of the wheel at the bottom of the hill if the wheel is moving initially at .5 m/s


I= 1/2mr^2

mgh=1/2mv^2



I know it is set up like a KE equation, and I also know I am missing a variable to solve for on the mgh side. Does anyone know what that variable might be? I know it isn't torque.
 
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Hi cnfsdstudent! Welcome to PF! :smile:

(try using the X2 tag just above the Reply box :wink:)

You need KE + PE = constant, and also KE = linear KE + rotational KE. :smile: