Investigating The Friction Of A Sliding Block With And Without Different Masses On It

This experiment examined the relation between wood and aluminum surfaces and their friction. The coefficient of static and kinetic friction can be derived from the experiments with the use of a horizontal Atwood’s machine and a Super Pulley. The static friction was tested by setting up an equilibrium with the hanging mass and the frictional force. Three tests were conducted with increasing additional mass on the friction block. An unbalanced force was required to test for the coefficient of kinetic friction. This is possible through solving for the acceleration of the unbalanced force. The total mass of the system is constant through all four of the tests, but different masses were added to the hanging mass so that the acceleration would have a variety of different accelerations to accurately solve for the kinetic friction. As a result, our coefficient of static and kinetic friction are μs = 0.26 ± 0.02 and μk = 0.30 ± 0.01 respectively.

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

scale. Use the pulleys to raise the load 10 cm. Measure and record the force

The lab 4.1 “What a Drag” was mainly about how friction affects most of our everyday things that people do or use . The “What a Drag” lab shows how friction can pull a block over 5 different surfaces. The different surfaces for each block has a different weight . On the Other hand, each of the surface area has a different surface but each blocks are the same.

There are two different types of frictional coefficients, static and kinetic. The coefficient of static friction is the frictional force that must be overcome before any motion commences. It is caused by the minuscule contact points between our tires and the riding surface (There is frictional losses present in every mechanical connection on the bike

To test Newton’s seconds law if whether changing the mass or the force affects the acceleration of an object or a trolley in this case to increase or decrease.

LAB REPORT ESSAY The 4 lab activities I did were measuring friction by putting sandpaper on the ramp and seeing how fast the car goes, and the taking the sandpaper off. We also measured gravity by putting more books by the ramp. We measured force by adding washers to see how fast the car will go and we measured mass by adding blocks onto the car. We did these to experiment how fast the car will go with things added to it.

My mousetrap car, of course, was going to run into multiple problems from friction to loose wheels, from short work times too long hours researching, but I am proud of the final product created. Some of the problems I ran into were the two types of frictions that affected my car and caused me to go back to the drawing board, the two frictions being rolling friction and sliding friction. Rolling friction was caused by the wheels of the car having bad traction and my wheels being too heavy, while sliding friction was caused by the axle on the front and back rubbing against the body of the car. Friction would also cause my car to slow down, and there were plenty of times when the string used for my car to start was worn down pretty fast by the

Scales were used to see how much force in newtons it would take for the block to be moved across the surface. The surfaces that were being tested were tabletop, coarse sandpaper, fine sandpaper, wax paper, and a paper towel. In lab 4.1, “What A Drag!”, a single block of wood would be drug across different surface areas. On the smoothest surface, the waxed paper, a wooden block only took 0.75 N of force to cross the wax paper.

The problems that we had with the friction was that it kept on stopping our vehicle. The concrete floor had some bits and pieces in the way and was a little bumpy in the area we tested (not the real test). We solved this friction problem by clearing the concrete floor and finding an area that is not bumping, which doesn’t interfere with our mousetrap racer going.

I believe that the purpose of this lab it to be able to identify the relation between force (N) and mass (kg or g). In this lab we were told to add mass to the bottom of the string and to measure the force with the force sensor. My group went up by intervals of 50 kg, in hopes to try to spread out our data. When the lab took place my group was able to successful fine of the relation between the mass and the force.

Friction allows the car’s wheels to spin across the floor without just sliding across the floor. Friction is also present in the gear box of the toy car. Friction is present because the gears have to rotate against each other in order for the toy car to obtain potential energy. The toy car only produces rolling friction, which is present when the wheels rotate against the floor. Rolling also appears in the gearbox. Friction while not energy affects the energy in the toy car in two ways. Friction causes kinetic energy to be lost while the car is moving. Kinetic energy is lost when the wheels rotate against the floor because the wheels are using kinetic energy to move. The energy is then lost when because of rolling friction heat is produced. In a shorter sense the wheels because of friction convert some of the kinetic energy into thermal energy (heat). Energy is also lost when the gears in the gear box rotate against each other. Some energy would be lost because of the friction of the gears some potential energy would be converted to thermal energy affect making less potential energy available. While friction causes a loss to energy, rolling friction allows less work to be able to overcome friction (“About Friction”, 2003). Friction while not energy plays a part in both energies that affect the toy car.

As expected the surfaces which had a smoother surface (Wood, Plastic Board) travelled faster than the rougher surfaces due to the less contact with friction. The results showed effective and relevant information that explain that the cardboard box results were very similar throughout the 3 trials. These results were highly expected as we imagined. The results showed that the hypothesis was corresponding to the results accurately Surfaces which had less friction travelled on the surfaces at a much quicker speed.

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.

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