Circular Motion & Universal Gravitation

Front

What is Circular Motion?

Back

Circular motion is the motion of an object that revolves around a fixed point in a circular path. It can be uniform (constant speed) or non-uniform (changing speed).

Front

What is Universal Gravitation?

Back

Universal Gravitation is a fundamental force that states every mass attracts every other mass in the universe, with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.

Front

What is the formula for Newton's Law of Gravitation?

Back

F = Gm₁m₂/r², where F is the gravitational force, G is the gravitational constant, m₁ and m₂ are the masses, and r is the distance between their centers.

Front

How does distance affect gravitational force?

Back

Gravitational force decreases as the distance between two objects increases. Specifically, it is inversely proportional to the square of the distance.

Front

What happens to gravitational force if the distance is tripled?

Back

If the distance is tripled, the gravitational force becomes 1/9 of its original value.

Front

What is the relationship between mass and gravitational force?

Back

Gravitational force is directly proportional to the product of the masses of the two objects. If either mass increases, the gravitational force increases.

Front

What is the gravitational force between two 1 kg masses 1 meter apart?

Back

Using the formula F = Gm₁m₂/r², where G ≈ 6.674 × 10⁻¹¹ N(m/kg)², the force is approximately 6.674 × 10⁻¹¹ N.

Front

What is the gravitational constant (G)?

Back

The gravitational constant (G) is approximately 6.674 × 10⁻¹¹ N(m/kg)², a key value in the law of universal gravitation.

Front

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

Back

It means that if one quantity increases, the other quantity also increases at a constant rate. For gravitational force, if mass increases, the force increases.

Front

What is an example of circular motion in everyday life?

Back

An example of circular motion is a car turning around a circular track or a satellite orbiting the Earth.