Recent content by lew44

Homework Statement A 13.0 g bullet is fired at 578.1 m/s into a solid cylinder of mass 24.1 kg and a radius 0.11 m. The cylinder is initially at rest and is mounted on fixed vertical axis that runs through it's center of mass. The line of motion of the bullet is perpendicular to the axle...

thank you, i think i just didn't understand that you needed the x on the other side of the equation and that is what was giving me such a large answer

I am getting like 2198.249 as an answer.

it asks for the new period in days! I am not sure what to do with this problem

I still don't understand because if I change the bottom number to seconds I still have rot/sec and that is not seconds. Plus it asks for the period in days so doesn't that factor in?

Homework Statement The mass of a star is 1.370×1031 kg and it performs one rotation in 38.10 day. Find its new period (in days) if the diameter suddenly shrinks to 0.330 times its present size. Assume a uniform mass distribution before and after. Homework Equations Ii * Wi = If * Wf...

Homework Statement An automobile is traveling at v = 32 m/s and has wheels with radius R = 22 cm. Assuming that the wheels are disks which roll without slipping and have a mass m = 11 kg, what is the kinetic energy of rotation of the four tires in Joules? Homework Equations w = v/R...