The Law of Universal Gravitation Webquest

The Law of Universal Gravitation Webquest Visit the following websites, by entering the link and answering the questions by following the directions and finding the information on the websites.

1. Your Weight On Other Worlds http://www.exploratorium.edu/ronh/weight/index.html http://bitly.com/eVo8S

A) On what planet do you have the largest weight?______B) On what planet do you have the smallest weight?______C) Define mass:

D) How are weight and mass different?

D) The equation of the Force of gravity is: F G M·m r2 What variable does each of the symbols in the equation represent?

F = M = m = r =

2. The Universal Law of Gravitation http://www.regentsprep.org/regents/physics/phys01/unigrav/default.htm http://bitly.com/TCR3be

A) What is the definition of gravity “regardless of where you are in the universe”?

B) What is “G”? Is it the same thing as “g” which is the acceleration due to gravity?

C) Is there gravity in space? Explain.

3. The Physics Lab Online – Universal Gravitation http://bit.ly/RM7ZNY 1 How would the force change if the distance between the objects were to be doubled to 2r? . 2. How would the force change if the distance between the objects were halved to 1/2r? 3. How would the force change if one object’s mass increased 3 times and the other increased 2 times? 4. How would the force change if one object’s mass increased 3 times and the other increased 2 times while the distance doubled to 2r? r = d (radius = distance) Solve the following problems using the equation F = G m1m2 r2 1. Calculate the force between two objects that have masses of 70 kilograms and 2,000 kilograms separated by a distance of 1 meter.

8 24 2. The distance between Earth and its moon is 4 X10 meters. Earth’s mass is m = 6X10 kilograms and the 22 mass of the moon is 7X10 kilograms. What is the force between Earth and the moon?