practicals

• force and extension (method)

  1. measure length of spring with no masses
  2. add mass and measure length of spring extension and force added
  3. repeat with different masses
  4. stop when spring shows signs of reaching the limit of proportionality
• force and extension (equipment)


  spring

  masses

  clamp stand

  ruler

  stabiliser
• acceleration (method)

  1. place 400g on the trolley
  2. add 100g of mass to the hook
  3. record the trolleys acceleration
  4. take 100g mass off the trolley, put on the hook
  5. repeat until all masses are on the hook
• acceleration (investigation)


  newtons second law (acceleration is directly proportional to the force and inversely proportional to the objects mass)
• acceleration (equipment)

  light gate

  trolley

  pulley

  string

  4 100g masses

  clamp
• acceleration (graph)


  y axis - acceleration

  x axis - force
• waves (method)

  1. count the number of wave that pass a given point every 10 seconds (frequency)
  2. measure the length of 10 waves (wavelength)
  3. change frequency and retake measurements
  4. repeat and calculate speed
• waves (equipment)


  ripple tank

  strobe light

  low voltage power pack

  stopwatch

  ruler
• radiation and absorption (method)

  1. take 4 boiling tubes, painted matt black, gloss black, white, and silver
  2. pour hot water into each boiling tube
  3. measure start temp of tube
  4. measure temp of tube every minute
  5. the tube that cools fastest emits infrared energy quickest
• radiation and absorption (equipment)

  matt black cube

  gloss black cube

  white cube

  silver cube

  kettle

  water

  thermometer