Friction Lab Report

BEFORE CONDUCTING THE EXPERIMENT - You should already have submitted to your teacher an EXCELLENT Investigation Design that included:

However, the results are completely different. The results shown in the table, the water and cornstarch solution is most suitable liquid to use in the snow globes due to its thick viscosity compared to other solutions. Hence, the marble traveled slower as it created more drag onto the marble. Nevertheless, the water itself had low viscosity compared to other solutions because the marble reached the base faster of the measuring cylinder. As a result, it created less drag onto the marble compared to water and cornstarch solution. Therefore, the thicker the solution, the longer it takes for the marble to reach the base of the measuring cylinder. However, if the solution has low viscosity (such as water itself), the faster it the time it takes for the marble to reach the

The aim of the experiment was to find out how changing the mass effects the rise of the temperature of water.

A. How did the experiment in Part I demonstrate surface tension? Use your experiment observations when answering this question.

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.

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.

Right as the cup begins to slide the applied force is equal to the force of friction—draw a free body diagram for each type of cup (a total of three diagrams). Label the force due to gravity mg, the normal force FN, and the friction force Ff, but don’t use any specific numbers. What makes this a state of equilibrium?

The aim of this experiment is to find out if the water’s temperature would affect the time it takes for sugar to dissolve. To do that, we would investigate the time it takes for the a sugar cube to become flat in the bottom of a beaker.

As my hypothesis stated, both of the trials proved that the initial mass changed. The first trial was an open system because we used a cup, and the second trial was closed because we used a bag. The chemical reaction caused the initial mass to change, therefore concluding our experiment with the expected results.

For experiment one you will be testing road surface, and seeing if it will affect the speed of the hot wheel car. Before you begin your experiment, you will need to set up your tracks. Tape the two yellow tracks together,line them up and tape the front and back. Then take the top of the track and tape it to the left side of the desk in the back of the room, be sure to tape it 72 cm high. Once you tape the top, tape the bottom of the track 97 cm away from the base of the desk. Step four is to get 40 cm of the material you are testing, the floor, sandpaper, and wax paper. Use a stopwatch to conduct three trials for each surface material, from the top of the track to the end of the surface material. Finally, record the results in a data table

Now you are ready to conduct your experiment. Remember in a good experiment we want only one variable

This is my report on my science fair project. My science fair is about car friction.

3) In this experiment, only the forces on the plane surface were considered. Do the hydrostatic forces on the curved surface of the quarter-circle block affect the measurement? State why or why

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.

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.