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

How does distance affect gravitational force?

Back

Gravitational force decreases with the square of the distance between two objects. If the distance is doubled, the gravitational force becomes one-fourth of its original value.

Front

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

Back

If the mass of either object is increased, the gravitational force between them increases.

Front

What is the formula for calculating gravitational force?

Back

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

Front

What is the gravitational constant (G)?

Back

The gravitational constant (G) is approximately 6.674 × 10^-11 N(m/kg)^2, which is used in the calculation of gravitational force.

Front

If two objects exert a gravitational force of 36 N, what is the force if the distance is doubled?

Back

The gravitational force would be 9 N.

Front

What is the gravitational force between two 50,000 kg asteroids separated by 1000 m?

Back

The gravitational force is approximately 1.67 x 10^-7 N.

Front

What does it mean for gravitational force to be directly proportional to mass?

Back

It means that as the mass of an object increases, the gravitational force it exerts also increases, assuming the distance remains constant.

Front

If the distance between two objects is tripled, how does the gravitational force change?

Back

The gravitational force becomes one-ninth of its original value.

Front

What is the relationship between gravitational force and weight?

Back

Weight is the force of gravity acting on an object, calculated as weight = mass * gravitational acceleration (W = mg).