Vertical circular motion minimum speed proof - Physics Forums
Nov 21, 2009 · The minimum speed required for an object to complete a vertical circle is derived to be (rg)^0.5 at the top of the circle, where r is the radius and g is the acceleration due to …
Understanding Zero Velocity and Non-Zero Acceleration: Explained
Aug 1, 2009 · I heard it would be possible to have zero instantanous velocity & non zero acceleration (I know the opposite situation where there is velocity (constant), but zero …
Phase and group velocity for the wave function - Physics Forums
Jul 20, 2025 · Since the phase velocity is linear in , , the group velocity is an average of all the phase velocities in the wave pocket. This turns out true in the simplest case which wave …
Relationship between viscosity and velocity in fluid mechanics
Oct 31, 2022 · The viscous force within a fluid will depend on the velocity gradient (aka shear rate) within the fluid. That does not mean that the viscosity is a function of velocity. Viscosity is …
Is velocity ever a scalar quantity? • Physics Forums
Dec 27, 2024 · Velocity is fundamentally a vector quantity, possessing both magnitude and direction, while speed is a scalar representing only magnitude. In the context of the SUVAT …
Calculating Nozzle Flow Rate To work out the flow rate of water from a nozzle we need to work out the volume in a given period of time. To do this we work out the area of the nozzle and …
Phase velocity and wave velocity - Physics Forums
May 29, 2017 · Phase velocity and wave velocity are numerically equivalent, defined as ω/k, but conceptually they can represent different aspects of wave behavior. While both terms describe …
Velocity divided by Acceleration gives distance? - Physics Forums
Jun 24, 2016 · Velocity divided by acceleration does not yield distance, as the units do not align correctly. The discussion highlights a common confusion between the symbol 's' representing …
Exit velocity of a gas through a hole • Physics Forums
Sep 25, 2016 · The discussion centers on the relationship between the exit velocity of gas and the diameter of a hole in a pressurized container. Initially, it was suggested that the exit velocity …
Zero Velocty is Constant Velocity? - Physics Forums
Oct 9, 2015 · The constant velocity means that \dot {v} = 0, and so v=0 automatically satisfy this relation. So, we can say the zero velocity is constant velocity.