mass and weight

• What is mass defined as?


  The amount of matter an object is made from
• In what unit is mass measured?

  Kilograms (kg)
• How does mass change with location?


  Mass does not change with location
• How is mass measured?


  Using a balance
• What is weight defined as?


  The amount of force acting on an object due to gravity
• In what unit is weight measured?

  Newtons (N)
• How does weight change with gravitational field strength?


  Weight changes depending on gravitational field strength
• How is weight measured?

  Using a spring scale or force meter
• What is gravity?


  A force of attraction between two objects with mass
• What is the force of gravity pulling you towards the center of the Earth?


  1. 8 N/kg
• What is the equation for calculating weight?


  • Weight = mass x gravitational field strength
  • In symbols: $w =$$mg$
• What is the gravitational field strength on Earth?


  1. 8 N/kg
• How do mass and weight differ in terms of measurement and dependence on location?


  Mass is constant and measured in kg, while weight varies with location and is measured in N