Universal Law Of Gravitation

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 
• mass and matter
• distance and weight 
• weight and mass

The value of Universal Gravitational constant is

• 6.673X10^-11 Nm^-2kg²

• 6.673X10^-11 Nm²kg²

• 6.673X10^-11 Nm² kg^-2

• 6.673 x10^-11 N m^-2 kg^-2

If I double the distance between two objects, what happens to their gravitational Force?

• 4x bigger
• 4x smaller
• 2x bigger
• 2x smaller

The distance between the two masses in the previous situation is halved. Determine the gravitational force in this new situation.

• 20 N

• 40 N

• 80 N

• 160 N

Which of the following formulas is the correct equation for the law of Universal gravitation?

• $F=\frac{GM_1M_2}{d^2}$

• $F=mg$

• $F=\frac{Gd^2}{m_1m_2}$

• F= $F=\frac{KQ_1Q_2}{d^2}$

If you double the mass of an object, how will the gravity force it exerts on other objects be affected?

• Gravity force will double.

• Gravity force will be 1/4 as much.

• Gravity force will be 1/2 as much.

• Gravity force will not be affected.

Two objects are attracted to each other with 36 N of gravitational force. What would the force between them be if the distance between them were doubled?

• 9

• 18

• 72

• 144

State the law of universal gravitation in words only.

• Gravitational force between two objects is directly proportional to the sum of the squares of their masses and inversely proportional to the square of the distance between them.

• Gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

• Gravitational force between two objects is directly proportional to the sum of the squares of their masses and inversely proportional to the distance between them.

• Gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the distance between them.

An apple hangs on a tree on the Earth. Which of the following statements is correct?

• The force on the apple is less than the force on the Earth because the tree is supporting the apple.

• The force on the Earth is greater than the force on the apple because the Earth is more massive.

• The forces on the apple and Earth are equal.

• The forces on the apple and the Earth are zero because they are not touching each other.

Two objects are attracted to each other by a gravitational force F. If one mass is doubled and the other is tripled without changing the distance, what is the new gravitational force between the objects in terms of F?

• 4 F

• 9 F

• 6 F

• 1/9 F