Drag Coefficients for Spheres

Drag Coefficients for Spheres for Educational Laboratory.

Product Code:


Drag Coefficients for Spheres

Two Plexiglass cylinders are provided for performing the experiment, these are filled with fluids of varying viscosity. A ball sinks to the bottom under the action of gravity. The sink time and distance are measured. Included with the unit are a stopwatch and 10 spheres of different materials and volumes. At the bottom of the measuring tube is a chamber through which the balls can be removed without major loss of fluid.

Learning Objectives / Experiments

· Determination of the vertical descend of various bodies in a flow

· Determination of the viscosity of the liquids used

· Comparative measurements


1.  Experimental set-up for determining the vertical descend of a body in a flow

2.  2 Plexiglass tubes as measuring sections, sink heights marked with O-rings, with chamber for easy removal of the measuring objects

3.  10 balls of different materials and volumes

4.  Stopwatch included

Technical Data

Plexiglass cylinder 1330mm, od 100mm , approx. 8Ltr

Sink height: 1000mm


d=10mm: aluminium, POM, nylon

d=5mm: aluminium, POM, nylon

Dimensions and Weight

l x w x h : 720 x 640 x 1650 mm

Weight : approx. 45 kg