Week 7 Phyiscs

I have to say I enjoy what we are doing in class this week, because I have an understanding of what's going on! Not to say I haven't before, it's just I have a better understanding now. This week, we are continuing to talk about forces! We talked about the relationship between mass, and weight. We all know that weight is a force that the earth pulls on you, so that's how this is connected with forces.  Mass is just the amount of matter. So the relationship that we predicted was that the greater the mass the greater the wight. We had a lab where we had different weights, measured in grams, but we converted to kilograms, and this was the mass. We had to find the weight using a spring scale, and that was measured in newtons. After running the experiment we concluded that 1 kilogram equals 10 newtons! So the equation that came about was ( weight = 10(n/kg) * mass). The 10(n/kg) represents the gravitational field strength of the Earth. On the moon it is 1.6 (n/kg). We also learned how to find our weight in newtons. You would divide your own weight by 2.2lbs, and then multiply by 10. Or to find your weight on the Moon, you would divide your own weight by 2.2 lbs and then multiply by 1.6!  AFter you find your weight in newtons you can make a force diagram, that says the arrow pointing up is the floor is, let's say 727 Newtons, and then the arrow pointing down is the earth would be -727 newtons, to make it equal, or balanced.
The other experiment was the spring!  We used an electronic reader to determine the amount of force that was acting on the spring when you stretched it so many centimeters, We determined that the more force you have to put into the stretching the steeper the slope of the line, of the graph will be.