[填空题]
Three mountain climbers who are roped together are n xp,hw a rhl+w(jv.;5ashlp50;j.o q cscending an ice field inclined at so0 q5lh p.j;c21.0$^{\circ}$ to the horizontal. The last climber slips, pulling the second climber off his feet. The first climber is able to hold them both. If each climber has a mass of 75 kg , calculate the tension in each of the two sections of rope between the three climbers. Ignore friction between the ice and the fallen climbers.
