[填空题]
The cable supporting a 2125-kg elevator has a maximum strengti4 :3+ws t vf(o(wwupeh f9gyg(1e3o(tsef t )3wg vd2sof 21,750 N. What maximum upward acceleration ca(fg tow)s g2t9e(fegsd13y 3 vn it give the elevator without breaking? ( two decimal places)
