MCQ : Gravitation - 1 Class 9 Science MCQs & solutions - Free

The gravitational force between two bodies does not depend on the medium between the two bodies.

The value of the acceleration due to gravity on the surface of the Earth is 9.8 m/s².

The weight of an object on the Moon’s surface is 1/6th of the weight on Earth.

According to Newton's law of gravitation, every particle in the universe attracts every other particle with a force that is:

• Directly proportional to the product of their masses
• Inversely proportional to the square of the distance between their centres

When a mango falls from a tree:

• Both the mango and the Earth exert gravitational forces on each other
• The forces are equal in magnitude
• The Earth's much larger mass means its acceleration toward the mango is imperceptibly small compared to the mango's acceleration toward the Earth

Thus, while the forces are mutual, the observable effect is the mango moving toward the Earth.

The acceleration due to gravity on the Earth depends upon the mass of the Earth.

The Earth's atmosphere is held by Earth's gravity, which pulls the gases towards the planet, keeping them from escaping into space.

The law of gravitation describes the gravitational force between any two bodies having mass.

The value increases from the equator to the poles.The acceleration value due to gravity is least on the equator and highest at the poles.

Two different masses falling freely near the moon’s surface have the same velocities at any instant.

Answer: C) Directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Solution: The Universal Law of Gravitation states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance separating them. This relationship is fundamental to understanding gravitational interactions.