Force of Gravity Lab

Force of Gravity Lab

Data Table:

Graph:

Data Analysis :

VM: As the mass increases, the force increases proportionally.

MM:  Fg=(10.222 N/kg) mass - 0.0193 Newtons

Slope: For every 1 kg the force increases by 10.222 Newtons. 

Y intercept:  When the mass (kg) is at zero the force is -.0193 Newtons.

good!

Claims/Evidence/Conclusion: In the Force of Gravity lab, we made a few observations/claims. First of all, as a class, we concluded that we all got 9.8 n/kg because we are all on Earth gravitational field and therefore should attain the same mass. However, there was a few people whose numbers were off, but that was mainly due to mathematical errors. After comparing graphs with my classmates, I realized we all had similar, if not identical graphs. They all had the same slope. This is true because the force of gravity no! not force, the grav field strength is the same  - is the same throughout the world. We then found the equation, fg=mg. In general, fg is the force of gravity and mg is the mass of the gravitational force (fg= force of gravity, m=mass, g=gravitational force).  Therefore, force of gravity is equal to the mass times the grav field strength  of the gravitational force (m times g). 

To further differentiate mass between weight, mass is the amount of matter in something, while weight is the measurement of the pull of gravity on an object. Furthermore, mass is measured by using a balance comparing between known matter and unknown matter, while weight can be measured on a scale. Lastly, the mass of an object doesn't change when an object moves, while weight changes when it moves locations. I conclude that gravities force does not change and is the same throughout Earth.

Bonus: explain why light/heavy objects hit the ground at the same time when dropped

Light and heavy objects hit the ground at the same time when dropped because gravity is the same throughout the Earth. Regardless of the objects mass, the same force of gravity is exerted. In class we tested this by dropping a ball (weighed less) and a textbook (weighed more). They were dropped at the same time and hit the table at the same time. This is becuase regardless of the objects mass, the same force of gravity is exerted. There are a few exceptions, such as air resistance. more massive objects have a greater pull of gravity (they are heavier) - so the force/mass ratio is the same, making the same effect.

Dueling Buggies Lab

Dueling Buggies Lab

Objective Statement:  In the Dueling Buggies Lab we are trying to find where the buggies intercept at a certain distance of 180 cm. The buggies both start at different position. The slower buggy starts at 0 cm. (going in a positive direction) and the faster buggy starting at 180 cm (going in a negative direction). And from this we found where they intercepted.

Your Plan: For the slow buggy, we measured the speed of the buggy using a stop watch and a meter stick. We did this by setting up a line of tape measuring exactly 100 cm. We then proceeded to measure the speed. you did not measure the speed, you measured the time and distance and calculated the speed We put the car at zero cm and timed how long it took to reach 100 cm. We did it three times so our data would be exact. The three measurements of time were 5.97, 6.36, and 6.47 seconds. We then averaged it by dividing three from the total amount of seconds combined and got 15.95 cm/s. how did you get that #?
                   For the fast buggy, we measured the speed of the buggy using a stop watch and a meter stick as well. We did this by setting up a line of tape measuring exactly 100 cm. We then proceeded to measure the speed. We put the car at zero cm and timed how long it took to reach 100 cm. We did it three times so our data would be exact. The three measurements of time were 2.74, 2.49, and 2.44. We then averaged it by dividing three from the total amount of seconds combined and got 39.06 cm/s.

Data Analysis: After we got our data from the two buggies we than proceeded to find where they intersected starting from the point 180 on the y axis. We then used our averaged data from the speed of the slower and faster buggy and connected them to measure where they intercept. Lastly, we graphed 15.95x and -39.06x + 180. And the the point where it intersected was 52.91 cm. We then set up the two cars, the slow one at 0 and the faster at 180 and tested our prediction on the Dueling Buggies Lab.

Designing a  Solution: As a group we predicted that it would meet somewhere between 50 - 75. So we set up 180 cm of tape and tested it. And to our surprise, they intersected at exactly 52 cm. That is exactly what our calculator had calculated for us. We were shocked and excited. We had just completed the Dueling Buggy Lab and our method was correct. After a lot of handwork and determination we were able to complete this challenging lab.  great!