Experiment : Coefficients Of Friction

Students in an AP Physics lab perform an electrostatics experiment involving two charged spheres suspended

The lab five B was about friction and how its always present. The purpose of this lab wat to explore how friction affect motion. There are three types of friction we discuss like air, rolling, and siding.

The two types of friction of the mousetrap car are rolling friction and static friction are the two types of friction that may affect the performance of the mousetrap car. The problem of the friction did I encounter and how do you solve them one types of friction i encounter was the static friction I had to take off some glue from the stick that had my wheels and to open eye screws. The factor did take into account to decide the number of wheels you decide to chose for the mousetrap car I saw a video of a car that had 4 wheels and it ran really fast, so I thought a 4 wheeled car would run fast or at least the four meters. What kind of wheels did I use in each axles I use tires as my wheels on each axles. I think the affects on using big wheels

C. An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide.

4.1 “What a Drag” lab tested 5 different surface areas; Tabletop, Waxed paper, Paper towel, Fine sandpaper,and Coarse sandpaper. These 5 different surface areas caused the weight to appear different . The data shows that it increases each time you do it again. Each time you pull the block over the 5 different surfaces it can increase or decrease.

The coefficient of friction, or the μ, is a scalar value which is equivalent to the ratio of the force of friction (FF) between two surfaces to the normal force (FN) which pushes two surfaces together. Each set of surfaces has a different μ, as it depends on the particular materials. Basically, the μ increases as it becomes more difficult for objects to move against each other. When a large amount of force is required to move two surfaces against each other (and therefore a large amount of friction is produced), the μ will be much larger than when a small amount of force is required. For example, the μ of ice on a smooth metal would be very low, while the μ of rubber on rough wood would be much higher.

Table 1 we see that the numbers are relatively the same, because the law of conservation momentum principle the total momentum before the collision equals the total momentum after and we see this in the data.

Overall, there were little to no complications for this experiment. There were modifications made to the first part of this lab, the student written portion. One change was the distances. In the original written procedure, see Attachment 02 of this report, the distances for all parts were noted as; next to the heat source, 5 inches away, and 10 inches away. After testing these measurements in the lab, the distances were alter to be next to, 2 inches away, and 5 inches away. This was done in order to produce more prominent temperature results. The distances for the 10 precision measurements were also modified. Originally the student was to take measurements for 80 seconds, starting at 2 inches away from the heat

A-1. Describe the goal of the experiment or state the hypothesis or problem to be solved. Describe the purpose for doing the experiment ( why is it important). The goal of the experiment is for me to become familiar with the various types of glass and equipment that will be used later throughout the Science course.

1: Gather all the materials needed for the experiment (a meter tape, a ramp, 2 carts with wheels and without wheels, a rubbermat, 5-gram masses, tape, a triple beam balance, a calculator, and 2 other people to help you [Person 1 and Person 2]).

I utilized the coefficient of friction values based on skid testing conducted by the Institute of Police Technology and Management, (IPTM). IPTM testing, indicates a coefficient of friction of .90 - 1.50 for a vehicle furrowing.

Will different gloves with different amounts of friction have an affect on the amount of times a football is caught? If more friction is used, the amount of passes caught will increase, and the amount of passes dropped will decrease when the catch rate is the function of the gloves being used. The independent variable of this experiment is the amount of friction of different gloves. The dependent variable will be the amount of times the football is caught after being thrown. The experimental control will be using no gloves to add friction, and measuring the amount of passes caught.

The main objective of this lab was to measure the friction force it takes to start moving a weighted block across a table, and as it continued to move. This force was tested experimentally in three separate ways. The force was then solved graphically and mathematically through six different runs per method. TALK ABOUT RESULTS HERE.

In the skateboard experiment, when a person was pushed with two different forces, the acceleration of the larger force allowed the person to accelerate more. A direct relationship between force and acceleration is formed. When force is applied, the acceleration also increases (assuming the mass of the person is same). This statement is supported by Newton’s second law, where the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force. The equation that is extracted from the law, Fnet = ma, proves that when constant mass is divided into a larger force (numerator), acceleration should increase. In the second part of the skateboard experiment, two people, one heavier and one lighter, were

When two objects get in contact with each other the force between them forms. Scientists call this force the frictional resistance, or friction. It occurs because of the imperfections in the surfaces of objects, the molecules of both surfaces interfere with each other creating a natural force between two objects. The friction opposes direction of motion of the object and is parallel to the surface on which the action takes place. The force and magnitude that are necessary to overcome friction can be calculated. Area of objects that is involved in the contact is disregarded when calculating friction.