The resource has been added to your collection
In Chicago, the Willis Tower (known as the Sears Tower before 2009) has 108 floors, rising to a height of 442 m. Its main elevator, with a mean speed of 8.13 m/s, needs 54.4 seconds to reach the top floor. Assuming it weighs ... kg, the work done is calculated as a function of time. This corresponds to a power ... equal to ... kW.
This resource has not yet been reviewed.
Not Rated Yet.