One of your engineers has proposed to reduce the moment of inertia by bending the rod at its center into a v-shape, with a 60.0∘ angle at its vertex. what would be the moment of inertia of this bent rod about an axis perpendicular to the plane of the v at its vertex?

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.