- #1
decentfellow
- 130
- 1
Homework Statement
A particle of mass ##m## rotates about ##Z-##axis in a circle of radius ##a## with a uniform angular speed ##\omega##. It is viewed from a frame rotating about the ##Z-##axis with a uniform angular speed ##\omega_0##. Find the centrifugal force on the particle.
Homework Equations
$$\vec{F}=m\vec{a}$$
The Attempt at a Solution
I am a little confused by the language of the question. On reading the first sentence it looks like the particle is being observed from the ground and the second sentence is just given to confuse one who is solving the question. So, if that is the case then the answer should be ##m\omega^2a##.
But if what I assumed was wrong then that means that the particle is being observed from the reference frame which is rotating at a constant angular speed ##\omega_0##, if that is so then the angular speed of the particle in the reference frame of the ground is ##(\omega+\omega_0)##, so we get ##m(\omega+\omega_0)^2a## as the centrifugal force.
But the answer is neither, it is ##m\omega_0^2a##