gravity

• what is weight?


  the force acting on an object due to gravity
• why is the force of gravity close to the earth?

  due to the gravitational field around the earth
• what does the weight of an object depend on?

  the gravitational field strength at the point of where the object is
• the weight of an object and the mass of an object are...

  directly proportional
• what is the point where the weight of an object may be considered to act?

  the objects 'centre of mass'
• what is weight measured with?

  a calibrated spring balance (a newton meter)
• what does the symbol ∝ mean?

  proportionality