[填空题]
A diver (such as the one shown i(rh:6)y ut mnknl1 pd7o19 1nfsth1+xx e ,tjss Fig. 8–29) can reduce her moment of inertia by a factor of about 3.5 when changing from the straight position to the tuck position. If she makes 2.0 rotations in 1.5 s when in thetnlf+t,s1ep s1dj h 9xo1x71s tuck position, what is her angular speed ($rev/s$) when in the straight position? $rev/s$