m = 0.1 kg ï¼AC = BC = 0.2 m ï¼AB = 20 cm = 0.2 m ï¼ç»ç»³å¼ åæ大许å¯å¼Tmax = 5 N 两绳å伸ç´æ¶ï¼AC = BC = AB = 0.2 mï¼ ABC为çè¾¹ä¸è§å½¢ï¼ACãBCä¸æ°´å¹³æ¹å夹è§å为30度 设è§é度为wï¼AC绳æåT1ï¼BC绳æåT2