In the conical pendulum in Example 5.20 (Section 5.4), which of the forces do work on the bob while it is swinging?

In Example 5.20,

An inventor designs a pendulum clock using a bob with mass m at the end of a thin wire of length L. Instead of swinging back and forth, the bob is to move in a horizontal circle with constant speed with the wire making a fixed angle with the vertical direction (Fig. 5.32a). This is called a conical pendulum because the suspending wire traces out a cone. Find the tension F in the wire and the period T (the time for one revolution of the bob).