Gravitation and Uniform Circular Motion

RAFAEL

He was just sitting comfortably and the concept just popped out of his mind.

How did Sir Isaac Newton come to discover the Universal Law of Gravitation (popular version)?

It was a product of his careful observation that a falling apple had changing velocities from the point that it was hanging on the tree to the moment it moves towards the ground

How did Sir Isaac Newton come to discover the Universal Law of Gravitation (acceptable version)?

Force; Acceleration

By Newton's 2nd Law there must be a _______________ that acts on the apple to cause this ____________

Gravity

What do you call the force that acts on the apple to cause this acceleration?

Acceleration due to Gravity

What do you call the associated acceleration?

Uniform Circular Motion

It is described as the motion of an object in a circle at a constant speed

Constantly

An object is ______________ changing its direction as it moves in a circle

Tangent

At all instances, the object is moving ________ to the circle

Same; Directed

Since the direction of the velocity vector is the _______ as the direction of the object’s motion, the velocity vector is _______________ tangent to the circle as well

Attracts; Directly proportional; Inversely proportional

In Newton’s Law pdf Gravitation states that, everybody in the universe ________ every other body with a force that is ________________ to the product of their masses and ______________ to the square of the distance between them

Square of the distance between two bodies

In this formula, r2 is defined as

Mass of the smaller body

In this formula, m1 is defined as

Mass of the bigger body

In this formula, m2 is defined as

Uniform Circular Motion

It is the motion at constant speed along a curved path of constant radius

Centripetal Acceleration

It is produced by a force known as a centripetal force which is directed toward the center of the circle which the body

Centripental acceleration

In this formula, ac is defined as

Square of the velocity of a body

In this formula, V2 is defined as

Radius of circular path

In this formula, r is defined as

Accelerating; Changes continually

A body in uniform circular motion is ___________ because its direction _______________

Centripetal force

It is the inward force that keeps a body in a circular path

Centripetal force

In this formula, Fc is defined as

Mass of a body

In this formula, m is defined as

Radius

In this formula, r is defined as

Angle of repose (limiting angle)

Angle just before the block starts to hide

Limiting angle

Angle of repose is also called