GENERAL PHYSICS 1 MODULE 10 GRAVITY

first to discover that the laws of motion of objects on Earth are the same laws

that govern the rotational motion of celestial objects such as moon around the Earth and

Earth around the sun

• ISAAC NEWTON

• HENRY CAVENDISH

• TYCHO BRAHE

• KEPLER

He concluded that it was Earth’s

gravitational force that is holding the moon

in its orbit.

• ISAAC NEWTON

• HENRY CAVENDISH

• TYCHO BRAHE

• KEPLER

He reasoned that the magnitude of the force

due to gravity must be proportional to the

masses of the two objects.

• ISAAC NEWTON

• HENRY CAVENDISH

• TYCHO BRAHE

• KEPLER

States that an object will experience

acceleration if net force (gravity) acts on it.

• NEWTON’S 1ST LAW OF MOTION

• NEWTON’S 2ND LAW OF MOTION

• NEWTON’S 3RD LAW OF MOTION

• NEWTON’S 4TH LAW OF MOTION

States that every action results in an equal

but opposite reaction.

• NEWTON’S 1ST LAW OF MOTION

• NEWTON’S 2ND LAW OF MOTION

• NEWTON’S 3RD LAW OF MOTION

• NEWTON’S 4TH LAW OF MOTION

“Every object in the universe attracts every other object with a constant force directly

proportional to the product of the object’s masses and inversely proportional to the

square of distance between them.”

• LAW OF UNIVERSAL GRAVITY

• LAW OF GRAVITATION

• LAW OF UNIVERSAL GRAVITATION

• LAW OF GRAVITY

It refers to the speed required for an object

to escape completely from a planet.

• VELOCITY

• ESCAPE SPEED

• ESCAPE VELOCITY

• SPEED

An object that “falls” around a planet

• SATELLITE MOTION

• SATELLITE

• GEOSYNCHRONOUS ORBIT

• GEOSTATIONARY SATELLITES

is the natural satellite of Earth. It is in a state of eternal free fall - it

continuously falls without hitting the ground.

• MARS

• MOON

• SUN

• EARTH

An orbiting satellite is a projectile in the sense that the only force acting upon an

orbiting satellite is the force of gravity. A satellite is acted upon by the force of gravity

and this force does accelerate it towards the Earth.

• GEOSTATIONARY SATELLITES

• SATELLITE MOTION

• SATELLITE

• GEOSYNCHRONOUS ORBIT