Download This Lesson (PDF, 68 KB)
Short Description: Students use the measured properties of the Earth-like planet Kepler 10b such as its size and density, and by solving Newton's formula for gravity, they determine the weight of a 100 kilogram human standing on the planet's surface.
Gravity: It's What Keeps Us Together,
Grade Level: 9-12
Beyond Our Solar System
Science Education Standards:
By the end of the 12th grade, students should know that: Gravitational force is an attraction between masses. The strength of the force is proportional to the masses and weakens rapidly with increasing distance between them. 4G/H1
National Science Education Standards
Motions and Forces
Objects change their motion only when a net force is applied. Laws of motion are used to calculate precisely the effects of forces on the motion of objects. The magnitude of the change in motion can be calculated using the relationship F = ma, which is independent of the nature of the force. Whenever one object exerts force on another, a force equal in magnitude and opposite in direction is exerted on the first object.
Gravitation is a universal force that each mass exerts on any other mass. The strength of the gravitational attractive force between two masses is proportional to the masses and inversely proportional to the square of the distance between them.