<Dl> <Dd> I M A = F out F in = R a d i u s wheel R a d i u s axle (\ displaystyle \ mathrm (IMA) = (F_ (\ text (out)) \ over F_ (\ text (in))) = (\ mathrm (Radius) _ (\ text (wheel)) \ over \ mathrm (Radius) _ (\ text (axle)))) </Dd> </Dl> <Dd> I M A = F out F in = R a d i u s wheel R a d i u s axle (\ displaystyle \ mathrm (IMA) = (F_ (\ text (out)) \ over F_ (\ text (in))) = (\ mathrm (Radius) _ (\ text (wheel)) \ over \ mathrm (Radius) _ (\ text (axle)))) </Dd> <P> All actual wheels have friction, which dissipates some of the power as heat . The actual mechanical advantage (AMA) of a wheel and axle is calculated with the following formula: </P> <Dl> <Dd> A M A = F out F in = η ⋅ R a d i u s wheel R a d i u s axle (\ displaystyle \ mathrm (AMA) = (F_ (\ text (out)) \ over F_ (\ text (in))) = \ eta \ cdot (\ mathrm (Radius) _ (\ text (wheel)) \ over \ mathrm (Radius) _ (\ text (axle)))) </Dd> </Dl>

What is the formula for the given ratio of velocity simple wheel and axle