When a chainsaw is in operation, the chain moves with a linear speed of v$=5\mathrm{.}0$m$/$sv$=5\mathrm{.}0$m$/$s$.$ At the end of the saw, the chain follows a semicircular path with a radius of r$=0\mathrm{.}047$mr$=0\mathrm{.}047$m$.$