A $0\mathrm{.}525$kg$0\mathrm{.}525$kg toy slot car moves in a horizontal circular track with a radius of $1\mathrm{.}17$m$1\mathrm{.}17$m$.$ An external force of $2\mathrm{.}85$N$2\mathrm{.}85$N $,$ always tangent to the track, causes the car to speed up as it goes around. If it starts from rest, then at the end of its motion the radial component of the force of the track is