# hw sol 6 - Solutions to Homework#6 1 Use the equation of...

This preview shows pages 1–2. Sign up to view the full content.

Solutions to Homework #6 1) Use the equation of gravitational force, and divide the force equation for the first case (where the planets are their usual distance apart) by the force equation for the second case when they are five times closer: 25 1 25 1 5 2 2 2 2 1 2 2 1 2 1 2 2 1 = = = = d d d M GM d M GM F F d M GM F This way, the G and both M’s cancel out. The force is 25 times greater when the planets are one-fifth the distance apart. 2) Use the same technique of dividing the entire equation so you don’t have to worry about the constants G and M e (mass of the Earth). Treating the Earth as a mass concentrated at a point in its very center, the acceleration due to gravity at a distance R e (the radius of the Earth) is Now, divide this equation by the equation for

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 02/13/2010 for the course PHY 303L taught by Professor Turner during the Spring '08 term at University of Texas.

### Page1 / 2

hw sol 6 - Solutions to Homework#6 1 Use the equation of...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online