Gravitaton

What is gravitational force?

• Gravitational force is a force that attracts any two objects with mass.

• Gravitational force is a force that attracts any two objects with velocity.

• Gravitational force is a force that attracts any two objects with acceleration.

• Gravitational force is a force that attracts any two objects with weight.

which are the following is Newton’s Law of gravitation ?

• $W=\frac{GMm}{r}$

• $F\ =\frac{GMm}{r^2}$

• $V\ =\sqrt{\frac{GM}{r}}$

• $g=-\ \frac{GM}{r}$

Tags

NGSS.HS-PS2-4

What are the units for Gravitional Field strength,  $a_g\ =\frac{GM}{r^2}$  .Give two of them...

•  $N\ kg\ ^{-1}$  

•  $J\ kg\ ^{-1}$  

•  $m\ s\ ^{-2}$  

•  $m\ s\ ^{-1}$  

State Newton’s law of gravitation

• every object in the universe attracts another object with a weight that is directly proportional to the product of masses of both the objects and it is inversely proportional to the square of the speed between them.

• every object in the universe attracts another object with a force that is directly proportional to the product of masses of both the objects and it is inversely proportional to the square of the distance between them.

• every object in the universe attracts another object with a force that is directly proportional to the product of masses of both the objects and it is inversely proportional to the square of the acceleration between them.

• every object in the universe attracts another object with a speed that is directly proportional to the product of masses of both the objects and it is inversely proportional to the square of the distance between them.

What is h?

• is the altitude or height of the satellite from the surface of the planet

• radius of the planet

• radius of the satellite

• distance of the two objects from their center

What is the force applied to all objects on Earth?

• Earthquakes
• Gravity

What happens to the force of gravity if the mass of one of the objects is doubled?

• The force of gravity doubles
• The force of gravity is tripled
• The force of gravity is halved
• The force of gravity increases 4 times

Tags

NGSS.MS-PS2-4

Which of the following is true?

• M is inversely proportional to the F_g
• F_g is directly proportional to the separation distance
• F_g is inversely proportional to the separation distance
• F_g is inversely proportional to the square of the separation distance

Gravitational Field Strength, ag is the gravitational force exerted per unit ___________ placed at that point.

_____________ is the work done by the gravitational pull

to bring the mass from infinity (¥) to that point.