Monday, March 3, 2014

May The Force Be With You

   Hey everyone, I'm back with another post! This week, we'll be discussing force. And I hope that I'm not the only person that thinks of Star Wars when I hear the word force. That would just be embarrassing. Anywho, let's get started!
   A force is a push or a pull on an object. For example, if someone kicks a soccer ball and it moves, that is an example of a push, which is force. Next comes Newtons. A Newton is an SI (System Internationale) unit used to measure force.

  Now, we'll talk about net force. Net force is when more than one force acts upon an object at the same time. So, say two people are pushing on a door from opposite sides. If the person on the right was using more force to push the door, the prevailing force would be on the right; this force is the net force.
   There is another type of force I haven't mentioned called thrust. Thrust is a mechanical force that is used to move an object through the air, and it works against the drag of an aircraft.

   Now we'll talk about something that is important in force, and that is balanced and unbalanced forces. Let's say that there is a rock on the ground. This rock is being pulled downwards by the force of gravity with 6 Newtons. But in order to keep the rock from falling through the ground, there has to be another force acting upon it, which is the normal force. This moves upward with about 6 Newtons as well and keeps the rock in place. This is a balanced force. Now for another example, let's say the rock is also being pushed by a person on the right side with a total of 3 Newtons, and another person is pushing from the left with a total of 7 Newtons. The forces are now unbalanced due to the forces from the right and left side, and the friction from the rock's right movement.

   Lastly, we'll talk about centripetal force. Centripetal force is a force that makes an object follow a curved path, and is generally the cause for circular motion. Think of a roller coaster; when the cars are forced through a loop by the tracks applying a centripetal force to them.

That's it for now, but I'll be back soon enough
Hope you all enjoyed!

No comments:

Post a Comment