Testing gravity

9th September 2005 at 01:00
Some astrologers claim that astrology has a scientific basis and that it works because of the gravitational pull of the planets, the Moon and the Sun on human beings. But how strong is that pull? In a physics class, you can ask your students to calculate the gravitational attraction between a person and the planets using Newton's law of gravity.

For example, the gravitational pull between a person weighing 100kg and the planet Mars is 7.0 x 10-7 N. However the gravitational pull between a person weighing 100kg and a motor car one metre away is 66.7 x 10-7 N, nearly 10 times as strong. The objects you encounter here on Earth will have a much greater gravitational pull on you than faraway planets. All the data you need for this, and indeed all the calculations, can be found at: www.skepticreport.comastrologygravity.htm

Subscribe to get access to the content on this page.

If you are already a Tes/ Tes Scotland subscriber please log in with your username or email address to get full access to our back issues, CPD library and membership plus page.

Not a subscriber? Find out more about our subscription offers.
Subscribe now
Existing subscriber?
Enter subscription number


The guide by your side – ensuring you are always up to date with the latest in education.

Get Tes magazine online and delivered to your door. Stay up to date with the latest research, teacher innovation and insight, plus classroom tips and techniques with a Tes magazine subscription.
With a Tes magazine subscription you get exclusive access to our CPD library. Including our New Teachers’ special for NQTS, Ed Tech, How to Get a Job, Trip Planner, Ed Biz Special and all Tes back issues.

Subscribe now