Lecture19_post - Newtons Law of Universal Gravitation Every particle in Universe attracts every other particle with force directly proportional to

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Newton’s Law of Universal Gravitation • Every particle in Universe attracts every other particle with force: directly proportional to product of masses inversely proportional to square of distance between them. 2 2 1 r m m G F inverse square law G = universal gravitational constant = 6.673 x 10 -11 N m² /kg²
Background image of page 1

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

View Full DocumentRight Arrow Icon
Applications of Universal Gravitation • Acceleration due to gravity • g will vary with altitude 2 E r M G g Gravitational force of uniform sphere on particle outside sphere same as force exerted if entire mass of the sphere concentrated at its center--Gauss’ Law
Background image of page 2
Gravitational Potential Energy • PE = mgy is valid only near the earth’s surface • For objects high above the earth’s surface, an alternate expression is needed – Zero reference level is infinitely far from the earth r m M G PE E
Background image of page 3

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

View Full DocumentRight Arrow Icon
Escape Speed • speed needed for an
Background image of page 4
Background image of page 5

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

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/07/2011 for the course PHY 2053 taught by Professor Buchler during the Spring '06 term at University of Florida.

Page1 / 7

Lecture19_post - Newtons Law of Universal Gravitation Every particle in Universe attracts every other particle with force directly proportional to

This preview shows document pages 1 - 7. Sign up to view the full document.

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