The FORCES range enables clear and comprehensive learning of STATICS and DYNAMICS covering a variety of theories and topics. An understanding of the way in which forces act and react, is fundamental when studying the application of loads on a variety of fixed structures and rotating machinery. The FORCES form a comprehensive range of equipment, from fixed beams through to rotating machines apparatus, equally suitable for demonstration and experimental work.



HFC29 Coriolis Force Apparatus

This bench top unit gives excellent visual demonstration to the Coriolis Force on a jet of water. A horizontal boom sits on top of the main base unit and rotates in a horizontal plane. Attached to the boom is a water tank which projects a jet of water into the tank towards the centre of rotation of the boom.

An electronically controlled motor rotates the boom at different rotational speeds. As the speed of boom rotation is changed, the jet of water deflects under the Coriolis affect (force). The amount of deflection can be seen on increments on the water tank.

The speed of rotation of the boom is digitally displayed and controlled using the front panel mounted knob. The jet motor is operated using batteries supplied. A charger for the batteries is supplied also. All rotating components are protected within a clear safety dome.

 

HFC31 Combined Shear Force and Bending Moment apparatus

This compact bench top unit allows the observation and analysis of both Shear Force and Bending Moment within one unit. A rigid, aluminium beam is cut into two unequal lengths. Each part of the beam is then simply supported on vertical supports.

Each support can be moved along the beam section length creating varied support positions. At the ‘cut’ section, a bearing allows for both vertical movement (shear) and rotation (bending) to occur. The Shear Force is measured using a vertical spring balance and the bending moment is measured using the horizontal spring balance.

Special load hangers are provided that can be positioned accurately along the beams length by using the graduated scales attached to the side of the beams. The smooth design of the beam sections allows a wide variety of unrestricted load positions to be used along the beam lengths.

HFC33 Conservation of Linear Momentum

The HFC33 apparatus consists of a long precision air track manufactured from sturdy lightweight extrusion. A blower forces air through the extrusion and miniature holes running along its length. This creates a near frictionless ‘cushion’ of air onto which two trolleys can me moved which is crucial in preserving momentum in the Conservation of Momentum theory.

The trolleys can be set onto each other in different modes. The trolleys can accept additional masses onto them to vary the experimental parameters. The trolleys are projected along the air track by means of a catapult device with buffers installed to stop the trolleys if necessary. Light gates on the track monitor the timing of each trolley and a linear scale allows the distance to be recorded and the timing gate positions to be accurately set. The apparatus can also teach kinetic and potential energy, velocity, acceleration and force.

HFC38 Work Done by a Variable Force

This experiment is designed to reinforce the general principle that the work done, particularly by a variable force, can be determined by measuring the area under the graph of force against distance moved.

On one side of the board a suspension cord carrying a loaded trolley at mid span is tensioned by passing the cord over a pulley at one end and down to a weight hanger. As the vertical effort is increased, the tensioned cord will move to a new equilibrium position lifting the loaded trolley. Heights of the load and effort are measured relative to the base. On the other side of the board a pivoted arm carrying a load hanger at its end is restrained by a spring balance at right angles to the arm.

The angular position of the arm is indicated by a protractor scale attached to the back board. The effort is the force needed to hold the weighted arm at a particular angle. This can be repeated for several different weights. The back board is bench mounting.

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