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Scientific inquiry method
Scientific inquiry method
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Inquiry 2: Force with varied mass
Introduction:
In this inquiry the relationship between force and mass was studied. This inquiry presents a question: when mass is increased is the force required to move it at a constant velocity increased, and how large will the increase be? It is obvious that more massive objects takes more force to move but the increase will be either linear or exponential. To hypothesize this point drawing from empirical data is necessary. When pulling an object on the ground it is discovered that to drag a four-kilogram object is not four times harder than dragging a two-kilogram object. I hypothesize that increasing the mass will increase the force needed to move the mass at a constant rate, these increases will have a liner relationship.
Materials and Methods:
In the experiment these materials were used in the following ways. A piece of Veneer wood was used as the surface to pull the object over. Placed on top of this was a rectangular wood block weighing 0.148-kg (1.45 N/ 9.80 m/s/s). A string was attached to the wood block and then a loop was made at the end of the string so a Newton scale could be attached to determine the force. The block was placed on the Veneer and drug for about 0.6 m at a constant speed to determine the force needed to pull the block at a constant speed. The force was read off of the Newton scale, this was difficult because the scale was in motion pulling the object. To increase the mass weights were placed on the top of the ...
Laws such as the lever law and Euler’s Buckling Theorem come into play when testing and competition begins. A structure of wood and glue surely has much more to offer than meets the eye.
We ran into Newtons First Law, which claims that an object resists change in motion, as the marble rolled down the floor it didn’t stop until it was acted against by friction. As we moved on, Newtons Second Law came into play when we were creating our lever as we need a ball that would roll down with enough acceleration that it could knock down the objects. Newton’s second law claims, that F=MA. So, we choose a golf ball since it would have more mass than a rubber ball, but it would have less acceleration when the lever was started. This way, it would knock the upcoming objects. Newtons Third Law claims that every action yields an equal and opposite reaction. This is proven in our Rube Goldberg Machine when the small car was rolling down the tracks as the wheels pushes against the track making the track move backwards. The track provides an equal and opposite direction by pushing the wheels forward.
This equation shows that mass will not affect the speed of an object, proving that whatever the mass of an object, the speed will always remain the same if all the other factors are kept constant.
Then, the weight hanger is removed, the platform is spun until the indicator bracket and disk realign, and the apparatus is timed for ten revolutions. To proceed, the radius is changed and the experiment is run identically until measurements are made for five different radii. For the second experiment with variable mass and fixed radius, the apparatus is set up similarly to the first experiment, but the side post stays at the same radius while the weights on the weight hanger are changed. Again, the indicator bracket and disk are lined up for each trial, the weight hanger is removed, and the apparatus is spun for ten, timed revolutions. Likewise, five different weights are measured. In order to calculate the unknown mass of the hanging
I have chosen to look at the effect of the weight applied, as it is a
Newton’s 2nd Law of Motion states that acceleration is directly proportional to net force when mass is constant. This experiment dealing with variable forces has as its objective the verification of this law. In this experiment this law is tested for verification in straight forward way. Through the use of a Force Sensor and an Accelerometer, data collection of observations and measurements that a force exerts on a small cart along with the cart’s accelerations are to be determined. The sensors’ measurements will be employed to give meaningful relationships between the net force on the cart, its mass, and its acceleration under these conditions. The resultant measurements revealed will verify and determine the force and acceleration relationship as stated by Newton.
The Volume Library, vol. I, Physics: Newton's Law of Motion. Pg. 436. The Southwestern Company, Nashville, Tennessee, 1988.
The force on a small object is bigger than the same force acting on a
Newton’s Second Law of Motion. It states, “The force acting on an object is equal to the mass of that object times its acceleration (Lucas, paragraph 2).” Mike 's car, which weighs 1,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.05 m/s/s. Using Newton 's Second Law, you can compute how much force Mike is applying to the car with this formula ( F= 1,000 x 0.05 which equals 50 newtons). This is easy,
The first lab consisted of pulling a wooden block with a spring scale at a steady rate across four different surfaces. The surfaces were wax paper, paper towel, fine sandpaper, and coarse sandpaper. We had to pull the block across each of these surfaces to determine how much force we need to defeat friction. When I pulled the block over the wax paper, it moved with a small amount of force. Paper towel was also in the low range of force. However, with the fine and coarse sandpaper, much more force was required to move the block along. Therefore, the surface that had the lowest amount of friction was the wax paper, and the surface that had the largest amount of friction was the coarse sandpaper.
F = ma : where F is force; m is the mass of the body; and a is the acceleration due to that particular force
The acceleration of a body or object is directly proportional to the net force acting on the body or object and is inversely proportional to its mass. (F=ma)(Newman)
The second law is, “the relationship between an objects mass (m), its acceleration (a), and the applied force (f) is F= ma.” The heavier object requires more force to move an object, the same distance as light object. The equation gives us an exact relationship between Force, mass, and acceleration.
Science camp is a place where fun is mixed in with nature. During my week at science camp, I changed my ways and learned something new each day, I became independent and neater and I also learned about the animals that interest me.
Henderson, T. n.d. The physics classroom tutorial. Lesson 2: Force and Its Representation [Online]. Illinois. Available at: http://gbhsweb.glenbrook225.org/gbs/science/phys/class/newtlaws/u2l2b.html [Accessed: 28th March 2014].