Question

Prob 2 A "one-dimensional" rod (no width to consider) of mass M-3.2 kg and length-0.18 mis nailed to a wall at one end, having a moment-of-inertia o- 0.035 kgm2 about that axis. The rod is free to pivot about the nail which acts as a frictionless hinge. The rod is beld at rest horizontally and then released, at which point gravity acoclerates it downward as indicated in the fgue (a) What is the magnitude of the net torque acting on the rod as soon as it is released? hinge (b) Using conservntion of energy, calculate the angular velocity,i w, of the rod when it reaches the lowest (vertical) position (c) Calculate the angular momentum, L, of the rod when it reaches the vertical position (a) Is angular mmentum conserved in the motion? If so, why If not, why not? (In one short 42 sentenes, concisely explain the relevant physical concept)

I understand part a, but I am getting the incorrect answers for b and c.

The answer to b is 12.7 rad/s, the answer to c is 0.44 kgm^2/s. Please show all work including which general equations you are using to set up the problem, thank you!

Answer 1