Question

The formula that torque equals the rate of change of angular momentum is true in following general cases:

• A. a fixed axis in inertial space
• B. an axis through the centre of mass even through the object may be accelerating
• C. a variable axis are correct
• D. both $\left(a\right)$ and $\left(c\right)$ are correct:

Answer 1

Answer: (A), (B)

The correct options are
A an axis through the centre of mass even through the object may be accelerating
B a fixed axis in inertial space

Centrifugal force is a fictituous force in a rotationg frame of reference.
For a frame of reference rotating with angular velocity $\omega$, the centrifugal force on it is $m{\omega }^{2}r$
Where $m$ is the mass of the particle and $r$ is its distance from the origin.
Therefore centrifugal force in this case is $m{w}_0^{2}a$
(Here we have to assume its rotating about z axis since nothing is specified )