Chapter4

Chapter 6-

Conservation of energy

6.1 Springs and hooke's law

Practical

Practical Followup

Practical

Hooke's law

10x

  • Springs
  • masses
  • rulers
  • set square
  • stands, bosses, clamps

Risk :

  • When nearing fracture point use of goggles.

6.2 Elastic potential energy

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Practice qs

6.3 Deforming materials

Young Modulus and Yield Strength.mp4

Atomic view

Hooke's law

Practical

Followup

Practical

Hooke's law

5x

  • strawberry laces
  • a clamp stand
  • a G-clamp
  • some masses and a mass hanger
  • a metre rule
  • a set square

Risk :

  • No eating in the laboratory. Strawberry laces will be disposed of at the end of the lesson.
  • Attach the masses securely to the lace and ensure that, should the masses fall, they will not fall on your feet. You may need to protect the floor.
  • The clamp stand must be securely attached to the bench with a G-clamp.

6.4 Young's modulus

Practical

followup

Practical

Hooke's law

5x

  • a length of copper wire
  • two G-clamps
  • two wooden or plastic blocks
  • a metre rule
  • eye protection
  • a micrometer
  • 100g masses and mass hangers• a pulley on a clamp
  • some tape to mark the wire

Risk :

  • The wire should be firmly clamped between the blocks.
  • The floor may need protection from falling masses and you should keep
  • your feet clear.
  • Wear eye protection because eyes must be protected from the wire when it snaps.