
Relationship between viscosity and velocity in fluid mechanics
Oct 31, 2022 · Viscosity is an intrinsic property of fluids that remains constant regardless of the fluid's velocity, as long as the flow is laminar and the relationship between viscous force and …
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 · Zero velocity can occur at a single instant while acceleration remains non-zero, as demonstrated by a ball thrown upwards that momentarily stops at its peak height. Throughout …
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 …
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 …
Average Speed vs. Velocity: Explained • Physics Forums
Jul 9, 2021 · Average speed is defined as the total distance traveled divided by the total time, while average velocity is the change in position divided by the time interval for that change. In …
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 …
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 …
Can you have a negative average velocity? • Physics Forums
Sep 3, 2012 · Negative average velocity is possible when considering displacement in a defined directional context. For example, if an object moves north and then south, its average velocity …
How to find angular velocity from torque? • Physics Forums
Sep 6, 2013 · To find angular velocity (ω) from torque (τ), the relationship τ = Iα is used, where I is the moment of inertia and α is angular acceleration. Angular acceleration can be expressed as …