NGSS Physics IS2T2: Law of Universal Gravitation

Front

What is the Law of Universal Gravitation?

Back

The Law of Universal Gravitation states that every point mass attracts every other point mass in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What happens to the gravitational force if the mass of one object increases?

Back

The gravitational force increases.

Front

What happens to the gravitational force if the distance between two masses increases?

Back

The gravitational force decreases.

Front

What is the formula for calculating gravitational force?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the centers of the two masses.

Front

What is the gravitational constant (G)?

Back

The gravitational constant (G) is approximately 6.674 x 10^-11 N(m/kg)^2.

Front

If two objects have masses of 10 kg and 20 kg and are 2 m apart, what is the gravitational force between them?

Back

F = G * (10 * 20) / (2^2) = 6.674 x 10^-11 * 200 / 4 = 3.34 x 10^-9 N.

Front

True or False: Gravity only affects large objects like planets and stars.

Back

False. Gravity affects all objects with mass, regardless of size.

Front

What is the effect of increasing the distance between two masses on gravitational force?

Back

Increasing the distance decreases the gravitational force.

Front

Calculate the gravitational force between two 5 kg objects that are 0.5 m apart.

Back

F = G * (5 * 5) / (0.5^2) = 6.674 x 10^-11 * 25 / 0.25 = 6.674 x 10^-10 N.

Front

What is the relationship between mass and gravitational force?

Back

Gravitational force is directly proportional to the product of the masses.