# Study sets matching "ap physics law gravitation"

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(Johannes) Kepler

First

Second

Third

___ was a German mathematician, astronomer and astrologer; key…

Kepler's (first / second / third) law says that the orbit of e…

Kepler's (first / second / third) law says that a line joining…

Kepler's (first / second / third) law says that the square of…

(Johannes) Kepler

___ was a German mathematician, astronomer and astrologer; key…

First

Kepler's (first / second / third) law says that the orbit of e…

Universal gravitation definition

The closer objects that have mass are t…

Fg long formula

Gravity is a __________ force

all objects that have mass are attracted to each other

the stronger the gravity force they will feel

Fg = Gm₁m₂ / r²

field.

Universal gravitation definition

all objects that have mass are attracted to each other

The closer objects that have mass are t…

the stronger the gravity force they will feel

Equation for tangential velocity

Equation for Centripetal Force

Universal Gravitation Constant/Constant…

What equation should be used for Fg whe…

v = 2πr / T(period)

F = mv^2 / r

6.67e-27 Nm^2/kg^2

Fg = mg

Equation for tangential velocity

v = 2πr / T(period)

Equation for Centripetal Force

F = mv^2 / r

Universal gravitation

G

What do you have to be careful with wit…

Formulas that you must memorize

-universal gravitation constant... - 6.67 x 10⁻¹¹ Nm²/kg²

-UNITS: must be using meters (so if they give you kilometers,…

-weight = mass (kg) times g (varies throughout universe)... -univ…

Universal gravitation

G

-universal gravitation constant... - 6.67 x 10⁻¹¹ Nm²/kg²

attractive

mass, distance between centers of mass

double

quarter

The direction for gravitational forces is always ___________.

What two variables affect the gravitational force?

Doubling the mass of an object will __________ the force due t…

Doubling the distance between centers of mass will ___________…

attractive

The direction for gravitational forces is always ___________.

mass, distance between centers of mass

What two variables affect the gravitational force?

Force of Gravity

Centripetal Acceleration

Gravitational Field

Inverse Square Law

force which the earth, moon, or other massively large object a…

any object moving in a circle (aka circular motion) will have…

force field that exists in the space around every mass or grou…

power intensity per unit area from a point source, if the rays…

Force of Gravity

force which the earth, moon, or other massively large object a…

Centripetal Acceleration

any object moving in a circle (aka circular motion) will have…

Force of Gravity

Centripetal Acceleration

Gravitational Field

Inverse Square Law

force which the earth, moon, or other massively large object a…

any object moving in a circle (aka circular motion) will have…

force field that exists in the space around every mass or grou…

power intensity per unit area from a point source, if the rays…

Force of Gravity

force which the earth, moon, or other massively large object a…

Centripetal Acceleration

any object moving in a circle (aka circular motion) will have…

gravitational field

gravitational force

free fall acceleration

GPE near surface

tells how much 1 kg of mass weighs at a location... near earth,…

mg

equal to gravitational field

mgh

gravitational field

tells how much 1 kg of mass weighs at a location... near earth,…

gravitational force

mg

angular displacement

angular velocity

angular acceleration

displacement

distance traveled around a circle or arc, measure in radians o…

change in angular displacement over time, measure in rad/s

change in angular velocity over time, measured in rad/s^2

d=rθ

angular displacement

distance traveled around a circle or arc, measure in radians o…

angular velocity

change in angular displacement over time, measure in rad/s

gravitational force is a _______ force

Gravitational force is a mutual force o…

gravitational force is inversely propor…

what does G equal

weak

particles of matter

centers

6.673 X 10^-11

gravitational force is a _______ force

weak

Gravitational force is a mutual force o…

particles of matter

The Moon does not crash into the Earth…

Which pulls harder gravitationally, the…

In the International Space Station whic…

Two satellites orbit the Earth in circu…

d) it is freely falling but has a high tangential velocity.

f) Both the same; the Moon.

c) The astronauts and station are in free fall towards the cen…

b) The two satellites have the same speed.

The Moon does not crash into the Earth…

d) it is freely falling but has a high tangential velocity.

Which pulls harder gravitationally, the…

f) Both the same; the Moon.

Centripetal Acceleration

Centripetal Acceleration Equation

Tangential Velocity

Circular Velocity

Acceleration toward the center of a curved or circular path

Ac = v^2/r

Velocity measured at any point tangent to a circular path

The distance of the path over the time it takes

Centripetal Acceleration

Acceleration toward the center of a curved or circular path

Centripetal Acceleration Equation

Ac = v^2/r

**Concepts**... What happens to the force of…

What happens to the force of two masses…

What happens to the force of two masses…

What happens to the force of two masses…

1/9

1/16

x4

x2

**Concepts**... What happens to the force of…

1/9

What happens to the force of two masses…

1/16

Force of Gravity

Centripetal Acceleration

Gravitational Field

Inverse Square Law

Force = (universal constant of gravitation)(mass 1)(mass 2) ÷…

Rate of change of tangential velocity... (velocity)² ÷ (radius)

The region of space surrounding a body in which another body e…

Any physical law stating that a specified physical quantity or…

Force of Gravity

Force = (universal constant of gravitation)(mass 1)(mass 2) ÷…

Centripetal Acceleration

Rate of change of tangential velocity... (velocity)² ÷ (radius)

Force Of Gravity

Centripetal Acceleration

Gravitational Field

Inverse Square Law

F=GMm/r^2

The rate of change of tangential velocity

the region of space surrounding a body in which another body e…

a law stating that the intensity of an effect such as illumina…

Force Of Gravity

F=GMm/r^2

Centripetal Acceleration

The rate of change of tangential velocity

uniform circular motion

tangential velocity

centripetal force

List of possible centripetal forces

the motion of an object in a circle or a circular arc with a c…

velocity of something moving along a circular path

net force acting towards the center which causes the object to…

tension, friction, force due to gravity (like a satellite), no…

uniform circular motion

the motion of an object in a circle or a circular arc with a c…

tangential velocity

velocity of something moving along a circular path

Uniform Circular Motion

Tangential Speed (or Velocity)

Centripetal

Centripetal Acceleration

An object moves in a circular path about an external axis... The…

The speed of an object in circular motion that is tangent to t…

Toward the center... Center-seeking

The acceleration vector of a circling object points toward the…

Uniform Circular Motion

An object moves in a circular path about an external axis... The…

Tangential Speed (or Velocity)

The speed of an object in circular motion that is tangent to t…

Force of Gravity

Centripetal acceleration

Gravitational Field

Inverse Square Law

G is the gravitational constant of the universe and is always…

Centripetal acceleration is the rate of change of tangential v…

the region of space surrounding a body in which another body e…

a law stating that the intensity of an effect such as illumina…

Force of Gravity

G is the gravitational constant of the universe and is always…

Centripetal acceleration

Centripetal acceleration is the rate of change of tangential v…

uniform circular motion

arc length

banked curve

center of mass

motion in circular path with constant speed

Δs, distance traveled by object in circular path

curve in road sloping so it helps vehicle negotiate curve

point where entire mass of object can be thought to be concent…

uniform circular motion

motion in circular path with constant speed

arc length

Δs, distance traveled by object in circular path

Uniform Circular Motion

ac = v^2 / r

Center

Tangent, in the direction of motion

When a object moves in a circle at a constant speed, the circu…

Equation for centripetal acceleration in UCM

Where centripetal acceleration vectors point

Where the velocity vectors point in UCM

Uniform Circular Motion

When a object moves in a circle at a constant speed, the circu…

ac = v^2 / r

Equation for centripetal acceleration in UCM