Angular forms of acceleration, velocity and displacement

AI Thread Summary
The discussion focuses on the need for equations related to angular acceleration, velocity, and displacement. Participants confirm that popular linear equations can be adapted for angular motion by substituting linear variables with their angular counterparts. Key equations shared include those for constant angular acceleration, such as final angular velocity, angular displacement, and the relationship between them. The conversation emphasizes the importance of understanding these angular concepts for effective application in physics. Overall, the thread provides valuable insights into transitioning from linear to angular motion equations.
scotty_le_b
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I have been going through my equations and writing them up on the computer so I can refer to that when needed and have go to angular acceleration, velocity and displacement equations yet I don't have very many equations for those topics and I wondered if anyone had some equations for finding those values. I seemed to have more for acceleration, velocity and displacement in their linear forms, could I just changed the variables in those equations to their angular counterparts?
Thanks
 
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hi scotty_le_b! :smile:
scotty_le_b said:
… I seemed to have more for acceleration, velocity and displacement in their linear forms, could I just changed the variables in those equations to their angular counterparts?

the popular ones, yes :smile:

for example, from the pf library on https://www.physicsforums.com/library.php?do=view_item&itemid=204" …​

In the direction of constant acceleration:

v\ =\ u\ +\ at
v^2\ =\ u^2\ +\ 2as
s\ =\ ut\ +\ \frac{1}{2}at^2

Perpendicular to the direction of constant acceleration:

v\ =\ u
s\ =\ ut

For circular motion, with angular displacement \theta, angular velocity \omega, and angular acceleration \alpha:

\omega_f\ =\ \omega_i\ +\ \alpha t
\omega_f ^2\ =\ \omega_i^2\ +\ 2\alpha\theta
\theta\ =\ \omega_it\ +\ \frac{1}{2}\alpha t^2
 
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