If you don't solve this problem correctly in $3$ tries, you can get a hint.

a$)$ Calculate the work done on a $3915$ kg elevator compartment by its cable to lift it $63\mathrm{.}34$ m at constant speed, assuming friction averages $231$ N $.($b$)$ J

b$)$ What is the work done on the elevator compartment by the gravitational force in this process?

J

c$)$ What is the total work done on the elevator compartment?

J