Problem 3Q

Does H2 the molecule have a permanent dipole moment? Does 02 Does H20? Explain.

CALULATING MOMENT OF INERTIA OF CIRCULAR DISK AND RING Shubham kc St. Cloud state university Introduction The main objective of this experiment was to find the relation of moment of inertia with angular velocity and torques. In this experiment, we took the disk and a ring of mass 4710±5 g and 4214±5 g respectively. We also measured the diameter of both disk and the ring. The inner diameter of the disk was 1.98±0.02 cm and for the ring is 22.5±0.02 cm and the outer diameter for the disk and ring was found to be 25±0.02 cm and 25.4±0.02 cm respectively. We also measured the diameter of the spinner which was found to be 4.89±0.02 cm. 1 2 Id= 2 MR (i) where, Id=moment of inertia of disk, M= Mass of the disk, R= Radius of the disk R ¿ 2 (¿1¿¿2+R )2 Ir= ¿ (ii) 1 M ¿ 2 Where, I=rmoment of inertia of ring, M= Mass of the ring Conservation of energy states that: (KT+ K R U) =i(K + T + UR f (iii) where K Ts the transitional energy, KRis the rotational kinetic energy, and U is the gravitational potential energy. The initial potential energy relative to the final height of the hanging mass; the final total energy is just the kinetic energy of the falling mass and the spinning support. 1 2 1 2 mgh ¿ 2 mv + 2 m ω