Investigating Terminal Velocity
Introduction
When an object falls through a fluid it accelerates until it reaches its terminal velocity. At this speed the forces acting on it are balanced.
My task is to investigate the factors that affect the terminal velocity of a falling object.
Key Factors
· Mass of ball bearing
· Viscosity/density of the fluid
· Surface area of ball bearing
· Texture of the balls surface
· Temperature
I am going to investigate how mass affects the terminal velocity.
Prediction
I think that as the mass of the ball bearing increases so does the weight of the ball bearing, which requires more friction to balance the ball bearing's weight thus making the terminal velocity increase.
Mathematical Prediction
I think that the mass of a ball bearing is directly proportional to the terminal velocity. This is because if the mass of ball bearing doubles so does the weight of the ball bearing, which requires twice as much friction to balance the ball bearing's weight, which then doubles the terminal velocity.
Scientific Knowledge
The scientific knowledge to prove my prediction is that as the mass of the ball bearing increases the weight of the ball bearing is increased that requires more friction to balance the ball bearings weight which increases the terminal velocity.
As the ball bearing accelerates the friction acting against the falling ball bearing increases which in turn balances out the forces applied to the ball bearing which reaches the terminal velocity.
Method
The apparatus was set up as shown (in the diagram on the next page)
Two elastic bands were placed on the tube 60 cm (600 mm) apart measured to the nearest 0.1 cm. The first band placed low enough so that the ...
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...han 10% out from any group of results would be considered inaccurate and would be repeated. The uncertainties in my results after any repeated results were sufficiently small enough to keep my results reliable.
My results are not accurate enough to get a full curve of best fit because of the drag on the larger ball bearing as mentioned above.
I have found from my graph that another result could have been taken with the mass of the ball bearing between 0.88g and 2.05g.
I propose these improvements: -
· Wider tube for the ball bearing with an average mass of 2.05g
· A longer tube for a smaller percentage of error
· More results taken to increase accuracy
I suggest that more ball bearings with different masses should have had results taken to increase this investigation. Also all the improvements shown above should be taken into account to extend the experiment.
3. As engine speed increases above engagement, the primary clutch squeezes together some more and pushes the belt so that it moves to a larger radius on the primary. Because the two clutches rotate about fixed points, the belt gets pulled into the secondary, spreading it farther apart and moving the belt to a smaller radius.
4. How would you explain your results using the terms: impulse, momentum, force, and time? Use equations to help you explain the results.
(http://www.grc.nasa.gov/WWW/k-12/airplane/ballforce.html Horney, A., Lowry, T., Schwenker, E., & wray, E. (2008). A New spin on baseball. Electronic Proceedings of Undergraduate Mathematics, 3(4)).
Carmichael, Ralph. "Numerical Procedure for Computing the Trajectory of a Baseball." 2003. 16 Nov. 2004 .
is the reason that the ball does not rebound off the block at the same
The motion of a falling object can be described by Newton's second law of motion, Force = mass x acceleration. Do a little algebra and solve for the acceleration of the object in terms of the net external force and the mass of the object (acceleration = Force / mass). The net external force is equal to the difference between the weight and the drag forces (Force = Weight - Drag). The acceleration of the object then becomes acceleration = (Weight - Drag) / mass. The drag force depends on the square of the velocity. So as the body accelerates, its velocity (and the drag) will increase. It will reach a point where the drag is exactly equal to the weight. When drag is equal to weight, there is no net external force on the object, and the acceleration will become equal to zero. The object will then fall at a constant velocity as described by Newton's first law of motion. The constant velocity is called the terminal velocity.
The first law of Newton’s Laws is inertia. The basic definition of inertia is an object in motion will stay in motion until acted on by an outside force, as well as an object as rest will stay at rest until acted on by an outside force (Serwalt, R. & Faughn, J). This law applies to just about every move in the game of lacrosse. When a player picks up the ball in their stick, before they start to move, the ball is at rest, but once the player begins to move and cradle the ball, the ball is now in motion. The only way to stop the motion of the ball is if the player decides to stop moving and try to waste time. This would be called as a stall in the game, and causes a turn over. A good example of the ball staying in motion until acted on is when the goalie has the ball and begins to clear. A “clear” is when the goalie has possession of the ball and is looking for a player from the team to pass to, to get the ball out of the defensive zone into the other teams defensive zone (NCAA Men’s Lacrosse Rule Book, 2014) . When the goalie clears the ball it has to be a long pass. A good goalie can clear the ball the length of half of a football field, and if the pass is to high to the teammate to catch then the ball will be acted on by the force of gravity and the ground which causes the ball the ...
It is obvious its fall, but what else is occurring? Gravity. Albert Einstein discovered gravity by watching ordinary objects fall. At that moment, he became a scientific unscrupulous observer. Works Cited for: Dillard, Annie.
The one thing that interests me is bowling. I have been playing all my life and after a whole semester and a half of being in Mr. Fetter’s class, I realized that everything has physics in it. One night after going bowling with my girlfriend(s) I wondered why when I hit the first pin, only seven went down and thus I lost the game. So, I got on the Internet and found a lot of articles and web sites talking about the physics of bowling. A lot of the web sites were brief descriptions. A guy named Paul Durbin wrote many articles on physics. One of his articles he discussed was about bowling. He mentioned one thing we already went over this semester in physics class. But it seems to me that he neglected to mention other forces the play a big role in bowling and the physics behind it.
Ever wonder if the weight of a Frisbee affects how far you can throw it? I have. This experiment is designed to figure out if a heavier Frisbee goes farther or closer than a lighter Frisbee.
There is also the potential of human error within this experiment for example finding the meniscus is important to get an accurate amount using the graduated pipettes and burettes. There is a possibility that at one point in the experiment a chemical was measured inaccurately affecting the results. To resolve this, the experiment should have been repeated three times.
Possible sources of error in this experiment include the inaccuracy of measurements, as correct measurements are vital for the experiment.
speed of the ball rolling down a ramp. From the data that I'm going to
Volleyball also has newtons three laws of motion. Newton's first law states “ an object at rest will stay at rest , and an object in motion will stay in motion unless acted upon by an unbalanced force”. An example of that is Law of Inertia when the ball falls it will continue to fall unless it gets hit or passed. Newton's second law states “the acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to a mass of the object.” An example of this is F=m*a, the volleyballs force can be found. Newton's third law states “to every action there is an equal and opposite reaction”.When two objects interact, they exert a force on each other . An example of newton's third law is the action of serving or spiking the ball. Another example is the reaction of ball bouncing off the receivers
In this assessment of the projectile motion of an object, I found that it can be applied to many useful situations in our daily lives. There are many different equations and theorems to apply to an object in motion to either find the path of motion, the displacement, velocity, acceleration, and time of the object in the air.