Upload
joshua-roy
View
216
Download
2
Embed Size (px)
Citation preview
Do NowIn your notebook, answer the following
question in complete sentences:
What is the difference between mass and weight?
Mass vs. WeightMass
The amount of matter in an objectWeight
The force of gravity acting on an object
The difference??
GRAVITY
What forces act upon celestial bodies?
Gravity
ObjectivesDefine the term gravity.Compare and contrast mass and weightDescribe the factors that affect gravity
What is Gravity?Gravity is the attractive force between
two objectsGravity’s magnitude depends on:
Mass of objects involvedDistance between objects
Newton’s Law of Gravitation
F = Gravitational ForceG = Universal Gravitation Constant =
6.6726x10-11m3/(kg•s2)m1 = mass of first object
m2 = mass of second objectr = distance between centers of objects
Gravity in SpaceBody
Multiple ofEarth gravity
m/s2
Sun 27.90 274.1
Mercury 0.3770 3.703
Venus 0.9032 8.872
Earth 1 9.8226
Moon 0.1655 1.625
Mars 0.3895 3.728
Jupiter 2.640 25.93
Saturn 1.139 11.19
Uranus 0.917 9.01
Neptune 1.148 11.28
Pluto 0.0621 0.610