U3L11 Newton’s Law of Universal Gravitation Quiz

What is the mathematical expression of the gravitational force?

• F = Gm1/m2*r^2

• F = Gm1/m2*r

• F = Gm1m2*r

• F = Gm1m2/r

What is the gravitational constant denoted by?

• C

• B

• G

• A

What is the unit of the gravitational constant?

• Nm/kg

• m/s

• kg/m^2

• N

What happens to the gravitational force if the distance between two objects is doubled?

• It becomes half

• It becomes one-fourth

• It doubles

• It remains the same

What is the role of gravity in the planetary motion?

• It pushes the planets away from the sun

• It pulls the planets towards the sun

• It causes the planets to spin on their axis

• It has no effect on the planets

What is the force that constantly pulls an object toward the center of a circle?

• Centrifugal force

• Gravitational force

• Frictional force

• Centripetal force

What is the equation to calculate the centripetal force?

• F = Gm1m2/r

• F = GmM/r^2

• F = Gm1/m2*r

• F = mv^2/r

What is the source of the centripetal force in the solar system?

• Magnetic force of the sun

• Gravitational force of the sun

• Solar wind

• Planetary force

What is the value of the gravitational constant?

• 0.0000000001 Nm/kg

• 0.0000000000667 Nm/kg^2

• 0.0000000000667 Nm^2/kg^2

• 0.0000000001 Nm^2/kg

Who determined the value of the gravitational constant experimentally?

• Henry Cavendish

• Albert Einstein

• Galileo Galilei

• Isaac Newton