Stokes Law Calculator
Falling-sphere Viscometer
$2.99 · Designed for iPad. Not verified for macOS.
Stokes Law Calculator is a physics/math calculator used to find the Acceleration of Gravity, Medium Viscosity, Medium Density, Particle Density, Particle Diameter, or Terminal Velocity quickly and easily.
Stokes Law describes the steady flow of a continuous stream of fluid that is incompressible and has negligible viscosity. It serves as the basis of the falling-sphere viscometer. In the viscometer, the fluid remains stationary in a vertical glass tube.
Features:
- Instant calculation.
- Results are copyable to other apps.
- Formulas are included as references.
- Supports up to 16 decimal places.
- Supports various units for each input.
- Works seamlessly on both iPhone and iPad.
- Lightweight, compact app optimized for everyday use.
- Ad-free and built with privacy in mind.
Stoke's law states that at low velocities, the frictional force on a spherical body moving through a fluid at constant velocity is equal to 6π times the product of the velocity, the fluid viscosity, and the radius of the sphere. In short, the motion of a sphere through a viscous fluid is directly proportional to the velocity and radius of the sphere, as well as the viscosity of the fluid.
Formulas:
Fall or Settling Velocity:
Vt = gd² (ρp - ρm) / 18μ
Acceleration of Gravity:
g = 18μVt / d²(ρp - ρm)
Particle Diameter:
d = √(18μVt / g(ρp - ρm))
Density of Medium:
ρm = ρp - 18μVt / d²
Particle Density:
ρp = 18μVt / d² + ρm
Viscosity of Medium:
μ = gd²(ρp - ρm) / 18Vt
Where:
Vt = Fall or Settling Velocity,
g = Acceleration of Gravity,
d = Particle Diameter,
ρm = Density of Medium,
ρp = Particle Density,
μ = Viscosity of Medium.
Thank you for your support, and feel free to visit nitrio.com for more apps for your iOS devices.
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- Updated for the newest devices.
- Minor bugs fixed.
The developer, Nitrio, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tan Chia Ling
- Size
- 778.2 KB
- Category
- Utilities
- Compatibility
Requires iOS 13 or later.
- iPhone
Requires iOS 13 or later. - iPad
Requires iPadOS 13 or later. - iPod touch
Requires iOS 13 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Tan Chia Ling
