- #1
Ariano AnnaG
- 11
- 0
Homework Statement
A child is playing with a spring (k=100000 N/m, Li = 0.5 m). One of his toys (m=0.5 kg) is attached to the further extremity. The child is rotating the spring above his head on a horizontal plane, with a uniform circular motion.What is the elongation of the spring?
I’m not sure what is the right approach to this problem. I tried drawing a scheme of the forces as shown in the picture attached but I still have several doubts.
I thought the elastic force of the spring (Fel) that draws the mass towards the center, should be equal to the Centrifugal force (Fc) acting on the opposite direction and keeping the string in tension.
Hence I solved the problem equalizing them, as shown attached. I end up with a quite unlikely result (83.5m).
I don’t know if the initial condition is appropriate or if there are any other/different forces acting on the mass.
Homework Equations
in the attached photo
The Attempt at a Solution
in the attached photo