Sketch the acceleration of the elevator in Problem 28 as a function of time. If the elevator is supported by a single cable, what are the maximum and minimum tensions in the cable, expressed in terms of the elevator’s weight W?

A graph is plotted of the vertical velocity component vy of an elevator versus time. The y-axis points up. 

(a) How high is the elevator above the starting point (t = 0) after 20 s have elapsed? 

(b) When is the elevator at its highest location above the starting point? 

(c) Describe the motion in words. 

(d) Sketch a graph of y(t).

Transcribed Image Text:

(m/s) 2 t (s) -2 8 12 16 20 4,