when airfoil stalls occur, there's flow separation at a point on the airfoil. this separation makes the air flow no longer attached to the airfoil surface thus changing the flow trajectory and pressure distribution. the pressure is lowered at airfoil's back thus drag increased significantly; the...
Homework Statement
An elevator system (traction system) consists of a cab, a counterweight, and the motor-powered pulley. The cab and the counterweight is connected by a rope which is attached on the pulley. Consider the cab and the counterweight have equal mass = 1000 kg.
The elevator is...