11.1. Gravitational Field Strength

• What is the definition of gravitational field strength?

  Force per unit mass
• What is the formula for gravitational field strength?

  $g =$$\frac{F}{m}$
• The gravitational field strength decreases by a factor of 4 when the distance doubles due to the inverse square law.
• The gravitational constant, $G$, has a value of approximately 6.67 × 10^-11 N⋅m^2/kg^2.
• How does the gravitational force change if the distance between two objects doubles?

  Decreases by a factor of 4
• The gravitational field strength increases with increasing distance from the source mass.

  False
• What is the approximate value of the gravitational constant G?

  6.67 x 10^-11 N m²/kg²
• The units of the gravitational constant G are N m²/kg²
• The dimensions of gravitational field strength are LT^-2
• Newton's Law of Universal Gravitation states that every particle attracts every other particle with a force directly proportional to the product of their masses
• What is the relationship between distance and gravitational force according to Newton's Law?

  Inverse square
• Gravitational field strength is defined as the force per unit mass exerted by a gravitational field.

  True
• What does a gravitational field represent?

  The space around a mass
• Newton's Law of Universal Gravitation states that every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses
• Gravitational field strength is a vector quantity.


  True
• Arrange the following steps in calculating gravitational field strength near large objects.

  1️⃣ Calculate the gravitational force (F)

  2️⃣ Determine the mass of the object (m)

  3️⃣ Use the formula $g =$$\frac{F}{m}$
• Gravitational field strength follows an inverse square law with distance.


  True
• What does Newton's Law of Universal Gravitation state?

  Every particle attracts every other
• The gravitational force between two objects increases if their masses increase.


  True
• What is the relationship between gravitational force and the masses of two objects?

  Directly proportional
• The formula for gravitational field strength is g = \frac{F}{m}
• What does Newton's Law of Universal Gravitation state?

  Every particle attracts every other
• Greater mass always decreases gravitational force.

  False
• Gravitational force decreases linearly with distance.

  False
• Match the concepts with their definitions:

  Gravitational field ↔️ Space around a mass exerting forces

  Gravitational field strength ↔️ Force per unit mass at a point
• Gravitational field strength is influenced by Newton's Law of Universal Gravitation.


  True
• What are the units of gravitational field strength?

  N/kg or m/s²
• What is the formula for gravitational field strength?

  $g =$$\frac{F}{m}$
• Gravitational field lines indicate the direction of the gravitational force.


  True
• The gravitational field describes the overall space, while gravitational field strength quantifies the force per unit mass at a particular location.


  True
• Greater distance decreases gravitational field strength according to an inverse square relationship.


  True
• The scope of a gravitational field covers the entire space around a mass
• Greater mass increases gravitational field strength
• Match the distance from the source with the relative gravitational field strength:

  Near the source ↔️ High gravitational field strength

  Far from the source ↔️ Low gravitational field strength
• Gravitational field strength decreases with increasing distance from the source mass.


  True
• If the gravitational field strength at 1 meter is 10 N/kg, what is it at 2 meters?

  2.5 N/kg
• Match the factor with its effect on gravitational field strength:

  Mass ↔️ Larger mass increases g

  Distance ↔️ Greater distance decreases g
• What is the value of the gravitational constant $G$?


  6.67 x 10^-11 N m²/kg²
• The dimensions of gravitational field strength are LT^-2.


  True
• Gravitational field and gravitational field strength are the same concept.

  False