Ignore the blue dot. I\'m stuck between choice 1 and choice 3. An elevator start
ID: 2113581 • Letter: I
Question
Ignore the blue dot. I'm stuck between choice 1 and choice 3.
An elevator starts from rest on the ground floor, then does the following: Accelerates upward until it reaches cruising speed. Travels upward at constant cruising speed for several floors. Decelerates and comes to a stop at the top. Which of the following statements is true? The work done by the cable is positive in all 3 stages of the motion. The work done by the cable is positive in stage 1, zero in stage 2, and negative in stage 3 The work done by the cable is positive in stage 1, positive in stage 2, and zero in stage 3. The work done by the cable is positive in stages 1 and 3 and zero in stage 2 The work done by the cable is negative in stage 1, zero in stage 2, and positive in stage 3.Explanation / Answer
choice 1