HFN15 Slipping Friction Apparatus

HFN15 Slipping Friction Apparatus

A variable speed electric motor drives two rotating wheels on which a specimen bar oscillates with a single harmonic motion due to the even pressure that it exerts on each wheel in turn. The bar frequency is dependent on the coefficient of sliding friction. A number of specimen bars of different materials are provided. The distance between the two wheels can be varied. A stop watch is provided.

 

HFN15 Slipping Friction Apparatus
  • Self-contained, bench-mounted apparatus, to measure slipping friction in an oscillating system.
  • Two contra-rotating `V` pulleys of variable centres distance driven by a variable speed motor.
  • Frequency of oscillation of different rods supported by the pulleys enables the coefficient of friction to be determined
  • Set of 5 rods and tubes in mild steel, brass and aluminium alloy.
  • Variables to include weight of specimens.
  • Stop watch provided.
  • An Instruction manual for student and lecturer provided.
  • 2 year warranty
  • To determine the coefficient of sliding friction between the mild steel wheels and a bar of various materials.
  • To verify the equation of motion for the oscillating bar
  • To study the definition of an influence line for shear force
  • To investigate the effect of the vertical position of the bar centre of gravity