[填空题]
An elevator (mass 4850 kg ) is to be desihow l3p:z tobyv j +9j1bq, x1jq3tr2+gned so that thuzq1i:c)*uv j9 x- e2x2gabrge maximum acceleration is 0.0680 g . What u91aj*uqg 2z cvg:-xx r)2b eiare the maximum and minimum forces the motor should exert on the supporting cable? max = min =
