Lecture 31

Lecture 31 - Last Meeting Physics 231 General University...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Physics 231 General University Physics Lecture 31 Lecture 9 1 Last Meeting ± Gravity and Planetary Motion ² Kepler’s Laws Lecture 9 2 Today ± Gravity ² Field ² Energy Lecture 9 3 The Gravitational Field ± A gravitational field exists at every point in space ± When a particle of mass m is placed at a point where the gravitational field is g , the particle experiences a force F g = m g ± The field exerts a force on the particle Lecture 9 4 The Gravitational Field (cont.) ± The gravitational field g is defined as ± The gravitational field is the gravitational force experienced by a test particle placed at that point divided by the mass of the test particle ± The presence of the test particle is not necessary for the field to exist g m F g Lecture 9 5 The Gravitational Field, 3 ± The gravitational field vectors point in the direction of the acceleration a particle would experience if placed in that field ± The magnitude is that of the freefall acceleration at that location
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Lecture 9 6 The Gravitational Field (cont.) ± The gravitational field describes the “effect” that any object has on the empty space around itself in terms of the force that would be present if
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

Lecture 31 - Last Meeting Physics 231 General University...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online