What is the value of Newton's gravitational constant G?

G = 6.67 × 10⁻¹¹ Nm²/kg²

True or False: Gravitational force is the strongest force in nature.

False, gravitational force is the weakest force in nature.

What does the superposition theorem state regarding gravitational force?

The gravitational force between two particles is independent of the presence or absence of other particles.

The range of gravitational force is up to ___ .

Infinity

How is gravitational field strength defined?

It is defined as the force experienced by unit mass placed at any point in the gravitational field.

What happens to the value of gravitational acceleration 'g' as one goes below the surface of the Earth?

The value of 'g' decreases.

Kepler's First Law states that every planet moves around the sun in an ___ orbit.

Elliptical

What is the relationship described by Kepler’s Third Law?

The square of the planet's time period is proportional to the cube of the semi-major axis of its orbit.

True or False: A geostationary satellite orbits the Earth at a height of approximately 36,000 km.

True

Riddle: I am an energy that keeps satellites in orbit but is always negative. What am I?

Binding Energy

What condition must be met for a satellite to escape the gravitational field of a planet?

The satellite's velocity must be equal to or greater than the escape velocity.

Fill in the blank: The gravitational potential is the work done in bringing a unit mass from ___ to a point in the gravitational field.

Infinity

How does the Earth's rotation affect the value of gravitational acceleration at the equator?

The value of 'g' decreases due to the centrifugal force caused by Earth's rotation.

What is the formula for the orbital velocity of a satellite?

V = (G×Me / r)^1/2

Fill in the blank: The gravitational potential energy system of two point masses separated at a distance r is given by ___ .

U = - G × (m × M) / r

True or False: The escape velocity depends on the mass of the body being projected.

False, escape velocity depends on the mass and radius of the planet.

How does the gravitational field intensity behave inside a hollow sphere?

The gravitational field intensity inside a hollow sphere is zero.

What is the condition for a satellite to be considered geostationary?

It must have the same angular velocity as the Earth's rotation and be positioned above the equator.

The gravitational force between two objects is defined by which law?

Newton's Law of Gravitation states that every two objects in the universe attract each other with a force called gravitational force, which is proportional to the product of their masses and inversely proportional to the square of the distance between them.