[填空题]
An elevator in a tall build./4wmc4c yk 0asg*cj rjn2ke 7ing is allowed to reach a maximum speed l22uq l4cqp4xsxr ,(mof 3.5 $\mathrm{~m} / \mathrm{s}$ going down. What must the tension be in the cable to stop this elevator over a distance of 2.6 m if the elevator has a mass of 1300 kg including occupants?
