[填空题]
Arlene is to walk across a "higq2j1 b4z s5dk) lckvj1h wire" strung horizontally between two build i6o9t3ki3b03v bhp;i qqts :yings 10.0 bs9 i3t y o:b3pkq03;thiqi 6vm apart. The sag in the rope when she is at the midpoint is 10.0$^{\circ}$ as shown in Fig. 4-42 . If her mass is 50.0 kg , what is the tension in the rope at this point?
