A person weighting 0.6kN rides in an elevator that has a downward acceleration of 1.4m/s^2. The acceleration of gravity is 9.8 m/s^2. What is the magnitude of the force of the elevator floor on the person? Answer in units of kN.
use F=ma
600 N=m 9.8 is how they arrived at the weight of a...
Never mind I found out what I was doing wrong.
Instead of: L initial = L final I used the: I initial + I gum=I final
I then did: బ initial * I initial + బ gum*I gum=బ final*I final
Since బ gum had no angular speed I ended up with:
బ initial * I initial =బ final * I final
and since...
If I have a solid disc with a diameter of 30 cm and a mass of 700 grams with a speed of 45 rpm, and a mass of 350 grams falls 6 cm from center what is the speed of the disc. There are also no external torques.
I have no problem solving the angular momentum of the disc before the mass falls...