[填空题]
A 65-kg student runs at /d u nhp6dg1rposdre 3/;++rd5m/s grabs a rope, and swings ozx + lp*6c;4v uyw(d4bj2ux qout over a lake (Fig. 6–45). He rel*zbyuu +(c l446 vqwod;xxjp2eases the rope when his velocity is zero.
(a) What is the angle when he releases the rope? $^{\circ} $
(b) What is the tension in the rope just before he releases it? N
(c) What is the maximum tension in the rope? N