Wheel and axle
The wheel and axle is a machine consisting of a wheel attached to a smaller axle so that these two parts rotate together in which a force is transferred from one to the other. A hinge or bearing supports the axle, allowing rotation. It can amplify force; a small force applied to the periphery of the large wheel can move a larger load attached to the axle.
`sumτ = F_(out)R_(out) - F_(i n)R_(i n)= 0`
`=>`
`F_(out)R_(out) = F_(i n)R_(i n)`
`F_(out)/F_(i n) = R_(i n) / R_(out) = IMA`
IMA of Wheel and axle:
`IMA = R_(i n) / R_(out)`
