Please help!

How to solve this physics problem?
所有跟帖:
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                    总觉得题目很怪
                     -ghztomy- 
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                         (88 bytes)
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                        03/28/2009 postreply
                                                20:08:11
                    
                                                            
                    
                    
                                        
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                        03/28/2009 postreply
                                                20:08:11
                    
                    
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                    这里的滑轮是光滑的,没有阻力?
                     -于德利- 
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                        03/29/2009 postreply
                                                05:43:37
                    
                                        
                    
                    
                                        
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                        03/29/2009 postreply
                                                05:43:37
                    
                    
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                    没有阻力
                     -ghztomy- 
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                         (188 bytes)
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                        03/29/2009 postreply
                                                08:29:21
                    
                                                            
                    
                    
                                        
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                        03/29/2009 postreply
                                                08:29:21
                    
                    
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                    Must have the following condition:
                     -fargo_me- 
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                        03/29/2009 postreply
                                                12:03:40
                    
                                                            
                    
                    
                                        
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                        03/29/2009 postreply
                                                12:03:40
                    
                    
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                    answer is:T=T=(2/5Wp+Wb/2)/(1+cos45)
                     -ghztomy- 
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                         (111 bytes)
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                        03/29/2009 postreply
                                                19:56:51
                    
                                                            
                    
                    
                                        
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                        03/29/2009 postreply
                                                19:56:51
                    
                    
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                    错了,应该为 T=(2/5Wp+Wb/2)/(2/5+cos45)
                     -ghztomy- 
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                        03/29/2009 postreply
                                                20:01:33
                    
                                                            
                    
                    
                                        
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                        03/29/2009 postreply
                                                20:01:33
                    
                    
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                    回复:How to solve this physics problem?
                     -softstorm- 
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                         (56 bytes)
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                        04/01/2009 postreply
                                                12:11:49
                    
                                                            
                    
                    
                                        
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                        04/01/2009 postreply
                                                12:11:49
                    
                    
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                    回复:回复:How to solve this physics problem?
                     -清华狂徒- 
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                        04/02/2009 postreply
                                                07:25:57
                    
                                                            
                    
                    
                                        
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                        04/02/2009 postreply
                                                07:25:57
                    
                    
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                    No, you are wrong
                     -clinton-2007- 
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                        04/02/2009 postreply
                                                08:22:55
                    
                                                            
                    
                    
                                        
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                        04/02/2009 postreply
                                                08:22:55
                    
                    
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                    T=(2/5Wp+Wb/2)/(2/5+cos45)
                     -clinton-2007- 
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                        04/02/2009 postreply
                                                08:24:47
                    
                                                            
                    
                    
                                        
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                        04/02/2009 postreply
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