Universal Gravitational Constant Concepts

What does the constant 'G' represent in Newton's Law of Universal Gravitation?

• The acceleration due to gravity

• The force of attraction between two objects

• The universal gravitational constant

• The mass of the Earth

What measurements are necessary to determine the value of the universal gravitational constant 'G' using Newton's Law of Universal Gravitation?

• Only the force of attraction

• The force of attraction, the masses of the objects, and the distance between them

• Only the masses of the objects

• Only the distance between the objects

Which experiment was used to make the first precise measurements of the universal gravitational constant 'G'?

• Galileo's Leaning Tower experiment

• The Cavendish experiment using a torsion balance

• Newton's apple experiment

• The Foucault pendulum experiment

What characteristic describes the torsion balance used in the Cavendish experiment?

• It is a robust instrument for large forces

• It is a very sensitive instrument for forces of very small intensity

• It measures electrical forces

• It measures the speed of light

What is the approximate value of the universal gravitational constant 'G' in the International System of Units (SI)?

• 9.81 m/s^2

• 6.67 x 10^-11 N m^2/kg^2

• 3.00 x 10^8 m/s

• 1.00 kg

Why is the gravitational attraction between everyday objects in our daily lives usually negligible?

• Because the objects are too far apart

• Because the universal gravitational constant 'G' is very small

• Because the objects have very little mass

• Because there is no air resistance

Why is the gravitational attraction between an object and Earth not negligible, despite the small value of 'G'?

• Because Earth is very close to the object

• Because Earth's mass is very large

• Because the object's mass is very large

• Because Earth has a strong magnetic field

What is "weight" (forza-peso) defined as?

• The mass of an object

• The force of attraction between two objects of equal mass

• The gravitational attraction between Earth and an object on its surface

• The acceleration due to gravity