[填空题]
A bicyclist of mass 65l2 pr t(r9njn*k2t1g n kg ( .fks- o *-hthxrw-3mjincluding the bicycle) can coast down a 6.0$^{\circ} $ hill at a steady speed of 6.0 $\mathrm{~km} / \mathrm{h}$ because of air resistance. How much force must be applied to climb the hill at the same speed and same air resistance?
