calculating weight on various planets

Calculating Weight on Various Planets

Created

Dr. A. Dávila

If you were on another planet, you would weigh differently than on the planet Earth.

Weight: the gravitational force exerted by the given amount of substance.

The weight that you feel depends on your actual mass.

The weight that you feel depends on your actual mass.

Mass: the amount of substance, the amount of material.

Weight on a planet depends on

WEIGHT ON A PLANET

Weight on a planet depends on the amount of matter (mass) an object has,

WEIGHT ON A PLANET

Weight on a planet depends on the amount of matter (mass) an object has,the mass of the planet,

WEIGHT ON A PLANET

Weight on a planet depends on the amount of matter (mass) an object has,the mass of the planet, and how far away the object is from the center of that planet.

WEIGHT ON A PLANET

All of the planets on our solar system have gravity.

Earth’s gravity is the force that pulls things down toward the center of the Earth.

All of the planets on our solar system have gravity.

0.5

1

1.5

2

2.5

0

Mercury Venus Earth Mars Jupitar Saturn Uranus Neptune Pluto©M&A Dávila

Gravitational Pull Levels on the Planets(approximations compared to Earth)

This horizontal bar graph provides a visual representation of the gravitational pull levels on the planets.

Why does the gravitational pull vary?

0.5

1

1.5

2

2.5

0



Which planets have a greater gravitational pull than Earth?

0.5

1

1.5

2

2.5

0



0.5

1

1.5

2

2.5

0



Which planets have a greater gravitational pull than Earth?

0.5

1

1.5

2

2.5

0



Which planet has the greatest gravitational pull?

0.5

1

1.5

2

2.5

0



Which planet has the greatest gravitational pull? Jupiter

0.5

1

1.5

2

2.5

0



Jupiter’s gravitational pull is little more than 2.5 (2 1/2) times more than planet Earth

How does this information serve an individual preparing to visit the planet Jupiter?

0.5

1

1.5

2

2.5

0



Jupiter’s gravitational pull is little more than 2.5 (2 1/2) times more than planet Earth

0.5

1

1.5

2

2.5

0



Gravity effects weight.

How does this information serve an individual preparing to visit the planet Jupiter?

How would you calculate your weight on Jupiter?

0.5

1

1.5

2

2.5

0



Gravitational pull is a significant factor on determining weight of an object.

0.5

1

1.5

2

2.5

0



____ my weight


0.5

1

1.5

2

2.5

0



____ my weight Plus ____ my weight


0.5

1

1.5

2

2.5

0



____ my weight Plus ____ my weightPlus 1/2 of my weight


0.5

1

1.5

2

2.5

0



____ my weight Plus ____ my weightPlus 1/2 of my weightEquals my weight at planet Jupiter


0.5

1

1.5

2

2.5

0



My weight times 2.5Equals my weight at planet Jupiter

Another method to calculate weight on Jupiter, is to use a formula.

0.5

1

1.5

2

2.5

0



2.5 times my weightequals my weight at planet Jupiter

Calculate weight at Jupiter.

0.5

1

1.5

2

2.5

0




w = my weightj = Jupiter’s weight


0.5

1

1.5

2

2.5

0




w = my weightj = Jupiter’s weight

w x 2.5 = j


Create a graph so others can have an idea of how much they will weight at Jupiter.

0.5

1

1.5

2

2.5

0



The x-axis begins with 90 pounds because an average adult weights about this much or more.

x-axis

Weight on Jupiter

The y-axis begins with 200 pounds because 90 x 2.5 will equal 225.

y-axis

Weight on Jupiter

Earth’s weight (lbs)

y

x

Weight on Jupiter (lbs)

The y-axis begins with 200 pounds because 90 x 2.5 will equal 225.

Weight on Jupiter


y

x


Use a formula to calculate the weights.

Weight on Jupiter

Weight =90


y

x


Weight on Jupiter

Weight =90

formula

w x 2.5 = j


y

x


Weight on Jupiter

Weight =90

substitute

w x 2.5 = j90x2.5 = j


y

x


Weight on Jupiter

Weight =90

solve

w x 2.5 = j90x2.5 = j 225 = j

Jupiter’s wt.Is 225 lbs.

Earth’s weight (lbs.)

y

x

Weight on Jupiter (lbs.)

Weight on Jupiter

Use a table to organize and calculate the data

weight (lbs.) on Earth’s

weight (lbs.) on Jupiter

90 90 x 2.5 225w x 2.5

Weight on Jupiter


90 90 x 2.5 225100 100 x 2.5 250110 110 x 2.5 275120 120 x 2.5 300130 130 x 2.5 325140 140 x 2.5 350150 150 x 2.5 375160 160 x 2.5 400170 170 x 2.5 425

w x 2.5

Use another table to organize the data for the x- and y-axis.

x-axis y-axis

90 225

Weight on Jupiterweight (lbs.) on Earth’s

Weight on Jupiterx-axis y-axis

90 225100 250110 275120 300130 325140 350150 375160 400170 425

Use this information to graph.

weight (lbs.) on Earth’s


90 90 x 2.5 225100 100 x 2.5 250110 110 x 2.5 275120 120 x 2.5 300130 130 x 2.5 325140 140 x 2.5 350150 150 x 2.5 375160 160 x 2.5 400170 170 x 2.5 425

w x 2.5


y

x


Weight on Jupiterx-axis y-axis

90 225

Graph each point.


y


Weight on Jupiter

Graph each point.

x

x-axis y-axis

90 225100 250


y


Weight on Jupiter

Graph all points or two points are enough to...

x

x-axis y-axis

90 225100 250110 275120 300130 325140 350150 375160 400170 425


y


Weight on Jupiter

connect the points to form a continuos graph.

x

x-axis y-axis

90 225100 250110 275120 300130 325140 350150 375160 400170 425


y


Weight on Jupiter

Why is this type of graph helpful?

x


y


Weight on Jupiter

If you want to include all types of individuals, what should the minimum value for the x-axis?

x


y


Weight on Jupiter

Are the arrows on the line graph appropriate?

x

Which planets have a less gravitational pull than Earth?

0.5

1

1.5

2

2.5

0



Create another graph for Mars.

0.5

1

1.5

2

2.5

0



What would the formula be?

Graphs created with the Inspiration (www.inspiration.com)

Other websites to visit:weights in other worlds:http://www.exploratorium.edu/ronh/weight/index.html

gravitational force for each planet or refer to http://www.enchantedlearning.com/subjects/astronomy/http://www.exploratorium.edu/ronh/weight/index.htmlhttp://www.fi.edu/qa96/amy3/amy3.html

calculating weight on various planets

Documents

weight times

jcalculate weight

planet jupiter w

jupiters weight w x

planet earthhow

jupiter lbsuse

jupiter lbsthe

greater gravitational