Angular velocity and angular frequency

AI Thread Summary
Angular velocity and angular frequency are related concepts, both measured in radians per second. Angular velocity refers to the rate of change of angular displacement, while angular frequency is specifically associated with uniform circular motion and sinusoidal oscillations. Angular frequency can only be defined when an object rotates with constant angular velocity. The relationship between them is expressed as ω = 2πf, where f is the frequency. Understanding these distinctions is crucial for applications in physics, particularly in circular motion and oscillatory systems.
logearav
Messages
329
Reaction score
0

Homework Statement




what is the difference between angular velocity and angular frequency?

Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
if angular velocity is given in radian/s, then it is equivalent to angular frequency, but there is a potential catch... because there is a difference between instantaneous angular velocity and average angular velocity... and one can only define an angular frequency if a body rotates with constant angular velocity. In which case \omega = \frac{d\phi}{dt}=2\pi f
 
Simply put though, one is ascociated with angular motion, circular motion is the most fundamental example.
The other is associated with sinusodial oscillations whether it is simple harmonic motion or variations in alternating current.
 
thanks a lot for replying to my questions
 
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top