Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

8. Gravitational Field Summary

GCE A Level H2 Physics - Teaching Tool
by

mrcheung

on 21 May 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of 8. Gravitational Field Summary

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli
Gravtational Force
NEWTON's LAW of GRAVITATION
Gravitational Field Strength
gravitational force per UNIT MASS
of object with mass M
Gravitational Potential
Work Done in moving UNIT MASS from infinity to final point (radius R away from centre of body of mass M)
Gravitational
Potential Energy
Work done required in moving body of mass m from infinity to final position (radius R away from centre of body of mass M)
Escape Velocity
minimum kinetic energy required for gain in GPE from surface to Earth to INFINITY
GRAVITATIONAL FIELD
summary
gravitational constant
Earth: g = 9.81 N/kg
gravitational field lines
gravitational potential at infinity = ZERO
Equipotential Surface
mrcheung
Satellites in Circular Orbits
Gravitational Force = Centripetal Force
GRAVITATIONAL FIELD
minimum starting velocity
loss in KE = gain in GPE
i.e. Earth surface - only KE -->
infinity - only GPE, no KE
Geostationary Orbit
Period of revolution, T = 24 hours
plane of revolution in plane with Equator
satellite revolves from WEST to EAST
Energy of Satellite in Orbit
U
g
gravitational field strength
gravitational force
gravitational potential energy
gravitational potential
Full transcript