Mechanics System 3 – code: 4861.39

Mechanics System 3

Code: 4861.39

A basic introductory mechanics system for mechanics of fluids

Mechanics System 3 introduces the basic concepts of fluid dynamics.

The system provides a useful framework to understand and study quantitatively many fluid dynamics experiments.

Case 1
Size: 75x55x20 cm
Weight: approx. 4 kg

Case 2
Size: 75x55x20 cm
Weight: approx. 9 kg
Packing: external suitcase in aluminium, internal
foam to prevent accidental breakage

Equipment Suggested
RED Force Sensor (code 4840.14)
RED Gas Pressure Sensor (code 4840.17)
Tripod Stand (code 4830.46)
Vernier Caliper (code 2213.10)
Tape Measure (code 2211.10)


  • Universal base
  • Bosshead
  • Swivel bosshead
  • Extension Clamp with Rod
  • G Clamp
  • U-Tube manometer
  • Air Blower
  • Pascal Apparatus Ball
  • Viscosity Tube
  • Mariotte’s Bottle
  • Tube for Mariotte’s Bottle
  • Cartesian Diver
  • Communicating Vessels
  • Capillary Tubes
  • Drying Tube
  • Force Pump
  • Hare’s apparatus
  • Venturi’s tube


  • Principles of the manometer
  • Communicating vessels
  • Hydrostatic pressure and Pascal’s Law
  • Stevino’s Law
  • Archimedes’ Law
  • Bernoulli’s equation
  • Torricelli’s theorem
  • Determination of the volume of a solid body
  • Determination of density and of specific weight of a solid body
  • Determination of density of immiscible liquids
  • Capillarity
  • Boyle’s Law
  • Pumps and siphons
  • Adhesion and cohesion
  • Cartesian diver
  • Measurement of surface tension
  • Viscosity


  • Adhesion and cohesion
  • Archimedes’ principle
  • Bernoulli’s theorem
  • Boyle’s Law
  • Buoyant force
  • Capillarity
  • Cartesian diver
  • Communicating vessels
  • Density of a solid body
  • Density of two immiscible liquids
  • Drag coefficient
  • Force pump
  • Hagen-Poiseuille Law
  • Hare’s apparatus
  • Hydraulic brake
  • Hydrostatic pressure
  • Jurin’s Law
  • Mariotte’s bottle
  • Ostwald viscometer
  • Pascal’s Law
  • Perfect gas Law
  • Relative density of two nonmixable fluids
  • Reynold’s number
  • Siphon
  • Stevino’s Law
  • Stoke’s formula
  • Surface tension
  • Terminal velocity
  • The Archimedes’ principle
  • The Gamow, Oppenheimer, Bloch puzzle
  • Torricelli’s theorem
  • U-tube manometer
  • Venturi’s tube
EXAMPLE OF USE: Hare’s apparatus

Find the relative density of a liquid.

Hare’s apparatus consists of an inverted U-Tube immersed in two vessels of fluid. One vessel is filled with water and the other with a fluid of unknown density.
By pinching the tube at any point higher than the Y Piece, you will notice both liquids rise to a certain height in each tube.
Therefore, when air is removed from the top of the apparatus, the liquids rise in the tubes to heights which are inversely proportional to their densities. Therefore, Hare’s apparatus is used to compare the density of two liquids.

4861.49Formula of the relative density of a liquid with respect to another.

4861.49 - Pressure force graph vs. syringe piston position

Pressure force graph vs. syringe piston position