Physics Gravitation Flashcards
(33 cards)
What is the universal law of gravitation?
Every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Fill in the blank: The gravitational force is _______ proportional to the product of the masses.
directly
True or False: The gravitational force acts only on objects that are in contact with each other.
False
What is the formula for gravitational force?
F = G * (m1 * m2) / r^2
What does ‘G’ represent in the gravitational force formula?
The gravitational constant.
If the distance between two masses is doubled, what happens to the gravitational force between them?
It becomes one-fourth of the original force.
What is the value of the gravitational constant (G)?
6.674 × 10^-11 N(m/kg)^2
Multiple choice: Which of the following has the greatest effect on gravitational force? A) Mass B) Distance C) Both A and B
C) Both A and B
What is weight?
The force of gravity acting on an object.
True or False: An object’s weight is the same on the Moon as it is on Earth.
False
Fill in the blank: An object in free fall experiences _______ acceleration due to gravity.
constant
What is the approximate value of gravitational acceleration on Earth?
9.81 m/s²
How does mass affect the gravitational force?
Greater mass results in a stronger gravitational force.
What happens to the gravitational force if one mass is tripled?
The gravitational force is tripled.
Multiple choice: Which of the following is NOT a property of gravitational force? A) It is attractive B) It acts at a distance C) It can be shielded
C) It can be shielded
What is the relationship between gravitational force and distance?
Gravitational force decreases as the distance between two masses increases.
True or False: Gravitational force can be experienced in a vacuum.
True
What is the effect of gravity on the motion of planets?
Gravity keeps planets in orbit around the Sun.
Fill in the blank: The force of gravity is _______ proportional to the square of the distance between the centers of two masses.
inversely
What does ‘r’ represent in the gravitational force formula?
The distance between the centers of the two masses.
What is the gravitational force between two 1 kg masses that are 1 meter apart?
6.674 × 10^-11 N
Multiple choice: Which scientist formulated the law of universal gravitation? A) Einstein B) Newton C) Galileo
B) Newton
What is the impact of gravity on the tides?
The gravitational pull of the Moon and the Sun causes tides on Earth.
True or False: Gravity only affects large objects like planets and stars.
False
