Monday, May 14, 2012

Gravitational and Frictional forces

GRAVITATIONAL FORCE
Gravitational Force is the force between the things and the Earth. It always pull things down to the center of the earth. The power of the gravitational force is not the same everywhere.Some examples are when swimmer dives, man climbing the rocks and speeding up a skier.

 FRICTIONAL FORCES
Frictional force is a force that produces friction. It is produced when two surfaces rub each other. Frictional Forces can slow down and stop moving objects, prevent an object to move and affect the movement of object in different surfaces. Examples of Frictional Force is when you push a toy car, it will slow done and stops.



Electric circuit

At 24 April 2012 me and my team made an electric circuit the project is about making 2 electric circuit one is parallel and the other one is series circuit.
How to make the 2 circuits
14 alligator clips
4 bulbs and 2 battery holders
4 batteries
Reflection
I enjoyed making the circuits but I only finish one circuit because in the second try the bulb not lighted up