Weight

• What is Weight?

  the force exerted on a mass by the gravitational field, in Newtons
• What is the equation for weight?

  weight = mass x gravitational field strength

  W = mg
• How is weight measured?

  By a calibrated spring-balance
• How does a weighing scale work?

  Measures the force you exert, then divides by 10 to give mass
• On earth, what does g =?

  9.8
• Same person, on two different planets?

  • mass is same
  • g will be different on both so weight will be different
• Where is weight considered to act?

  At the object's centre of mass