Hour 5 December 11, I. Purpose: To find out if the amount of centripetal force needed to keep a body in orbit depends on the orbital radius length of string. Hypothesis: If the orbital radius is increased, then the amount of centripetal force increases.
The centripetal force increases because the further an object is from the source of force, the greater the force has to be to keep it moving at a constant velocity. Procedure: a.
Materials i. Two Meter Sticks ii. Tape iv. Logger Pro Force Probe v. Computer with Logger Pro Software b. Data Collection i. Gather materials. Use tape to attach plastic tube to meter stick.
Connect the force probe to the end of the string opposite from rubber stopper. Zero the force probe. Hold the force probe firmly to the meter stick at a selected distance so the orbital radius stays constant.
Distances used were:. Measure the radius of the string from rubber stopper to the plastic tube. Swing the rubber stopper in circular motion above head. Count the number of rotations in a 10 second interval. Collect average force data with Logger Pro over 10second interval. Calculate velocity for selected radius. Repeat steps v-x for four different radius measurements. Graphing in Excel i. Enter Radius and average Force in two separate columns. Highlight radius and average force data and create a graph.
Add a trend line v. Create an adjusted graph with Radiusn. Find an n value that makes a linear graph and the R2 value less than or equal to 1. Conclusions: The collected data shows that there is a relationship between the orbital radius of an object and its centripetal force. The collected data and graph show that the radius is inverse cubically proportional to centripetal force. So as the radius increases and mass and velocity remain the same, the centripetal force will decrease.
Words:Paragraphs: 7, Pages: 3. An object hat moves at a constant speed and changes direction is also experiencing acceleration even though its speed never changes. Both the acceleration produced by changing speed and the acceleration produced by changing direction require a net force. This is demonstrated by spinning an object on a string. Fifth string were to break or be cut, the object would fly out of its circular path at a tangent.
An equation can be used to represent the relationship between centripetal force, mass, velocity, and the radius of the circle. This equation is: [pica] Equipment and Setup Plastic tube Nylon cord Several rubber stoppers of different sizes Hanging masses Stopwatch Meter stick Tape Setup Procedural Summary String a plastic tube on the nylon cord and place a rubber stopper on one end and a hanging mass on the other end.
Don't use plagiarized sources. Sometime it would not start or stop correctly. Other times it would stop and start again when the button was only pressed once. This means the timing of the 20 revolutions may not have been the most accurate, which would change our period lengths as well. Finally how we spun the stopper may not have been consistent.
The path may have been slightly different or may have been spun faster or slower than necessary. This would change our periods. Questions and Conclusions Based on these diagrams one can see that the tension is what is actually causing centripetal force to be placed on the stopper as it rotates in circular motion.
The mass remained stationary during the trials. This is because the tension applied to it and the force of gravity acting on it were equal.
This means the only force left is the tension and centripetal force to keep the stopper rotating. If the string were to break the stopper would fly in a direction tangent to the circle.Tests were done on a variable speed centrifugal pump unit at different. Laboratory tests showed that the wash performance was affected positively by a.
In this paper, the subject centrifugal pump lab experiment is a project-based. To draw the characteristic curves and study the constructional details of a Centrifugal Pump. This Master's thesis was written at the Waterpower Laboratory, Department of. Graph of Experiment Results. This problem can be solved by using the multistage centrifugal pump. Safety Precautions. For pumps connected in serial - add head, for pumps connected in parallel - add. It is of course understood that any laboratory submitting reports on its work will.
A copy of the investigation report is attached. This report elaborates on diagnoses the centrifugal pump failure by using vibration analysis. Typical critical characteristics identified for centrifugal pumps.
Report and answer any questions posed. MENG The centrifugal pump BPS increased the bath temperature significantly.
Export on. The mode of operation of centrifuga. September 14 Lab. Test Lab staff to ensure this program was completed professionally and in a timely. Of two pump types; 1 turbine pump and two centrifugal pumps, which test operation of pump when they are.
The specific hydraulic model that we are concerned with for this experiment is the. There are two main types of kinetic pumps: centrifugal pumps and vertical.
Centrifugal Rubber Lined Slurry Pump. Program, which has been going on in the Laboratory of Fluid Dynamics of the Department of. Two economists are studying the marketing, financing and impact of a human powered treadle irrigation pump among Kenya's smallholder. This experiment is designed to provide students experience with centrifugal pumps. Centrifugal pump coupled with electrical motor, supply tank, measuring tank.
Lab report: Performance characteristics of centrifugal pump. No report on performance of vortex pump. You must submit the report at the beginning of the lab session of when it is due. Flow is driven through the circuit by a 1. A simple centrifugal pump use a single impeller mounted on a shaft to. Centrifugal pump, mechanical seal and complete pumping system track two.Newton made many discoveries: the laws of gravity, colors, prisms, advanced mathematics and motion.
Newton's Three Laws of Motion are still in use today, and these principles can be found in almost any modern moving technology. Newton's First Law of Motion is often stated as "objects at rest stay at rest, and objects in motion stay in motion. Newton discovered that to get an object to move, the object must experience a force that makes it move in a certain direction.
Once the object experiences this force, it is set in motion and will continue this motion until it experiences an opposite force that causes the motion to stop. You have felt this phenomenon when riding in a car.
When the car starts moving you rock backward because your body wants to stay in its stationary position. But after you are moving, if the car suddenly stops you will rock forward because your body wants to keep moving forward at the same speed and direction. This example describes what happens when you experience motion in a straight line, but what about other types of movements?
Newton realized that when things move in a circle that the object wants to move out, away from the center of the circle. For example, when you are riding in a car and it makes a turn, you experience this circular motion as your body moves to the outside of the turn, away from the direction of the turn.
So if your body wants to move away from the center of the circle, what keeps you moving in a circular path? This force is what Newton described as centripetal forceor a force that makes an object move, or accelerate, towards the center of a circle.
Without centripetal force the object would move in a line. In the car example, the weight of the car, gravity, and the friction of the road keep you in your seat moving in a circle. Now back to the loop-de-loop rollercoaster. The tracks are moving in a circle, and we move along with it, but what is keeping us in our seat?
Gravity is a force that pushes us down toward the ground, which may help us stay in our seat at the bottom of the loop, but it probably does not help us stay in our seat at the top of the loop!
The force from our seat belt may help us stay in our seat, but just mostly at the top of the loop. Centripetal force is a force that must be constantly pulling us towards the center of the loop, not just at the bottom or top of the loop. What other forces are acting on us while we move in the loop? Could it be the force of the seat itself that is holding us in our seat?
Which force is the centripetal force when we ride in the loop-de-loop? Which way will the marble go? Figure 1. Once you have poured two layers of JELL-O into your cups, they should look similar to this one, with the marble in between the two layers. Figure 2. Prepare your centripetal force generator cup, as shown here, by making two holes in the top of the cup, placing electrical or duct tape above the holes, and tying string through the holes.
Science Buddies materials are free for everyone to use, thanks to the support of our sponsors. What would you tell our sponsors about how Science Buddies helped you with your project? Compared to a typical science class, please tell us how much you learned doing this project. About the same. Try one of our science activities for quick, anytime science explorations.Two experimental conditions were measured using 1 a simple pendulum and 2 a rotating table.
To acquire data regarding force, period, and velocity of the experimental setups a force sensor and photogate motion sensor were employed. The data was then analyzed graphically and mathematical calculations were performed on the graphical data. The percentage difference for the calculated tension of the pendulum string and the actual tension is. The results of the experiment confirm that the tension caused on the string of the pendulum is the centripetal force in addition to the force due to gravity.
The large percent difference in the second experiment is due to an error in the experimental procedure. The first law states that a body remains in constant uniform motion, or at rest, unless a net force acts upon it. Acceleration, being a quantity calculated by how fast the velocity is changing per unit time, can be expressed as the derivative of velocity giving the equation:. Applying a force parallel to the direction of motion will cause the velocity to either increase or decrease in magnitude, whereas a force applied to any angle will cause a change in magnitude and direction.
On the contrary, a force applied perpendicular to the direction of motion will only cause a change in the direction, not magnitude. Thusly, if a force is kept constant perpendicular to the direction of motion then uniform motion along an arc with radius r is achieved. Applying this force constantly to the direction of motion will cause the body to remain moving in a uniform circular motion.
In Figure Ia. The only two external forces on the mass are the force due to gravity, — mgand the force of tension on the string. When the force of gravity is counteracted, possibly by a horizontal spinning table, then the force of tension on the string is only due to the centripetal force and the second term is equal to 0.
Linear velocity is kept constant in order to maintain a similarly constant angular velocity and can be written in terms of radians where T is the period:. Since the centripetal force is mass times velocity squared over the radius of the circle the two formulae, 5 and 9can be combined:. The measurements taken from Test 1 were recorded and placed onto graph 1. The velocity and force were measured from seconds, as shown in graph 1, to obtain the mean values.
The mean value for velocity is. The mean value for velocity will be used in equation 8 to calculate the force of tension that should be exhibited by the string.Please join StudyMode to read the full document.
The total weight of the screw nuts and the wire hook provided the tension T in the Centripetal Force Lab Activity Analysis: 1. Title: Centripetal Force Tools and Equipments: nylon cord, different weighing hanging masses, stopwatch, meter stick.
Purpose: To be able to determine the relationship between centripetal forcemass, velocity, and the radius of orbit for a body that is undergoing centripetal acceleration. To investigate the dynamics of uniform circular motion.
Specifically the relationships among the centripetal forcethe accelerated mass and the radius of rotation. Centripetal force is generally the cause of circular motion.
In simple terms, centripetal force is defined as a force which keeps a body moving with a uniform speed along a circular path and is directed along the radius towards the centre.
Isaac Newton's description was: "A centripetal force is that by which bodies are drawn or impelled, or in any way tend, towards a point as to a centre. Also, through this experiment, students know some basic indexes to assess the efficiency of pumps used. This is achieved by a rotor or impeller, which is driven by an external source of power to move a row of blades so as to The mass of the rotating body M Experiment parts 1 and 2 2.
For circular motion to occur there must be a constant force acting on a body, pushing it toward the center of the circular path. For a planet orbiting the sun, the force is gravitational; for an object twirled on a string, the force is mechanical; for an electron orbiting an atom, it is electrical. According to Newton's third law There were four infants affected by this cluster. The families from the infants would collect their water from wells.
The four sources that could be the point of contamination are a new subdivision, textile plant, an organic farm, and a mountain lake. We did this by using a spectrophotometer. Introduction: Blue Baby Syndrome is a condition that affects many infants.Objective: The object of the experiment is to verify that the centrifugal force varies in direct proportion to 1.Centripetal force and acceleration intuition - Physics - Khan Academy
The mass of the rotating body M Experiment parts 1 and 2 2. The square of the speed of rotation Experiment part 3 3. Theory: According to Newton's first law of motion, a moving body travels along a straight path with constant speed i. For circular motion to occur there must be a constant force acting on a body, pushing it toward the center of the circular path.
This force is the centripetal center-seeking force. For a planet orbiting the sun, the force is gravitational; for an object twirled on a string, the force is mechanical; for an electron orbiting an atom, it is electrical. According to Newton's third law of motion, for every action there is an equal and opposite reaction.
The centripetal force, the action, is balanced by a reaction force, the centrifugal center-fleeing force. The two forces are equal in magnitude and opposite in direction. The centrifugal force does not act on the body in motion; the only force acting on the body in motion is the centripetal force.
The centrifugal force acts on the source of the centripetal force to displace it radially from the center of the path. Thus, in twirling a mass on a string, the centripetal force transmitted by the string pulls in on the mass to keep it in its circular path, while the centrifugal force transmitted by the string pulls outward on its point of attachment at the center of the path.
The centrifugal force is often mistakenly thought to cause a body to fly out of its circular path when it is released; rather, it is the removal of the centripetal force that allows the body to travel in a straight line as required by Newton's first law.
If there were in fact a force acting to force the body out of its circular path, its path when released would not be the straight tangential course that is always observed. Centrifugal Force, in physics, the tendency of an object following a curved path to fly away from the center of curvature.
Centrifugal force is not a true force; it is a form of inertia the tendency of objects that are moving in a straight line to continue moving in a straight line. Centrifugal force is referred to as a force for conveniencebecause it balances centripetal force, which is a true force.
If a ball is swung on the end of a string, the string exerts centripetal force on the ball and causes it to follow a curved path. The ball is said to exert centrifugal force on the string, tending to break the string and fly off on a tangent.
Procedure: Record the individual weights of the CF weights into table 1. The weight of the CF shafts is nominally 0.
Centripetal And Centrifugal Force
As these parts are not removable then this is the value of the CF shafts that should be used and recorded. To compensate for self-weight due to the CF shafts being rotated it is essential to establish the centrifugal forces readings without any CF weights added.
In the first place turn the power onto the unit without the dome fitted. Ensure no CF weights are added to the shaft. Check the force display functions by pushing down the thrust plate at the centre of the main base unit. Fit the protective dome is in position and the unit powers up. Check the tachometer and force display are showing values.
Adjust if necessary. Record the force reading from the force display as the tare weight of the apparatus in table 1.
This will not necessarily be zero due to the in house calibration procedure and the self weight of the system. Rotate the speed control potentiometer to select a speed of 50 rpm. Record the new force reading from the force display into column 3 of table 2.
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