Gravitational Field Strength

• What is the universal force of attraction between all matter with mass called?

  Force due to gravity
• What is responsible for the weight of all objects on Earth?

  The Earth's gravitational field
• How is a gravitational field defined?

  A region where mass experiences gravitational force
• In which direction does the gravitational field point?

  Towards the center of the mass
• Can gravitational forces be repulsive?

  No, they cannot be repulsive
• What is the range of gravity?

  Gravity has an infinite range
• How does mass affect gravitational force?

  Greater mass results in greater gravitational force
• What happens to gravitational force around small mass objects?

  It becomes almost negligible for atoms
• What does the Earth's gravitational field produce?

  An attractive force
• How is gravitational field strength (g) defined mathematically?

  g = F/m

  
• What does F represent in the gravitational field strength equation?

  Force due to gravity, or weight
• What does m represent in the gravitational field strength equation?

  Mass of the object
• What happens to gravitational force per unit mass on planets with a larger g?

  It is greater than on planets with smaller g
• Does an object's mass change at different points in space?

  No, it remains the same
• How does weight on Jupiter compare to weight on Earth?

  Weight is much greater on Jupiter

  
• What would happen to humans on Jupiter due to high gravitational force?

  They would be unable to fully stand up
• What factors affect gravitational field strength at a planet's surface?

  • Radius (or diameter) of the planet
  • Mass (or density) of the planet
• How do you calculate the mass of an object with weight 10 N on Earth?

  Mass = weight/g = 10 N / 9.81 m/s²
• What is the difference between g and G?

  • g: Gravitational field strength
  • G: Newton's gravitational constant
• What equation may be useful for calculations involving density?

  Density ρ = mass m ÷ volume V