https://padlet.com/j_rohde/o8lhbw8ykiu6 Juliette Rohde en-us 2019-02-07 19:24:13 UTC 2025-03-13 03:47:31 UTC hello@padlet.com j_rohde https://padlet.com/j_rohde/o8lhbw8ykiu6/wish/328936302 Question: If I pull a block across a friction board, how will the amount of mass the block has affect the amount of force I will need to use to pull the block across the friction board?

Background information:  Friction I have noticed is in our lives a lot even though we might not notice it. When you really start to notice and think about it you use it in everything you do. When you are pulling your laundry out of the dryer and they have static, that is because as the clothes are being rubbed together it is creating friction between the two objects. When I am cold I tend to rub my hands together, me rubbing my hands in an opposite direction in a fast motion, is creating friction and that friction is creating heat. Friction works because when an object has contact with another object they can rub together and create friction they have more friction when they are rubbed fast and less friction when they are rubbed slower. These examples of what happens to you everyday are just like the friction board, I am creating friction by pulling a block across a cork friction board. This will work because I will have an object being pulled over another object to create friction and how much force I will have to use to see how much I have to pull.


If I pull a block across a friction cork board, measuring the amount of force it takes to pull the mass of the block across the friction cork board, what will happen. I infer that the amount of force I use to pull the block across the friction cork board will increase with the amount of mass the block possess because the strength of the gravitational force between two objects depends on two factors, mass and distance. The more mass the block has the more force I will need to be able to full the block across the friction board as to the friction being created as I pull the mass of the block.]]> 2019-02-07 19:26:39 UTC https://padlet.com/j_rohde/o8lhbw8ykiu6/wish/328936302 j_rohde https://padlet.com/j_rohde/o8lhbw8ykiu6/wish/328937002 Materials: 
. Friction board (cork)
. Triple beam balance
. 3 different mass blocks
. spring scale

Control: Cork friction board.
Variable: The mass and size of the blocks being pulled over the friction cork board.

Procedures:
1. Measure the mass of the block using a triple beam balance and record your results.
2. Measure the length of the block using a metric ruler and record your results.
3. Measure the height of the block using a metric ruler and record your results.
4. Measure the width of the block using a metric ruler and record your results.
5. Place the friction board (cork) on a flat surface.
6. Place the block on top of the cork friction board so that the hook at the top of the block is facing you.
7. While your partner is holding the cork friction board down attach the spring scale to the hook at the top of your  block.
8. As you begin to pull the spring scale to you and your partner holding the cork friction board down, have them also look at the measurement the spring scale is showing as you are pulling the block at a constant rate across the cork friction board ( repeat steps 6-8 three times with the same block for an accurate measurement) record all 3 trails data.
9. Repeat steps 1-8 for all 3 blocks.

]]> 2019-02-07 19:27:47 UTC https://padlet.com/j_rohde/o8lhbw8ykiu6/wish/328937002 j_rohde https://padlet.com/j_rohde/o8lhbw8ykiu6/wish/328937511 Observation: During my testing I was noticing that to be able to pull the mass of my block with the spring scale with an accurate measurement I had to pull the spring scale at an equal level to be able to pull the mass of the block at a constant rate. The more mass of the block the more you had to be aware of the spring scale and holding it at an equal level with the block. As to the spring scale wouldn't be able to get an accurate measurement if it was not at an equal level with the block, if not the spring scale would bounce around and you would not get an accurate measurement. During one of my tests, I was holding the spring scale wrong and the numbers were crazy, the accurate measurement was 3.5 and when I was holding the spring scale wrong I got the measurement of 1.5 which was not an accurate number at all. https://docs.google.com/spreadsheets/d/1FAsyM00xGMZKG8fIEiVBF4S2Pse_kL8U7YVb6hpD0Jk/edit#gid=0]]> 2019-02-07 19:28:33 UTC https://padlet.com/j_rohde/o8lhbw8ykiu6/wish/328937511 j_rohde https://padlet.com/j_rohde/o8lhbw8ykiu6/wish/328939314 To figure out how the mass of a block being pulled across a friction board you have to follow certain steps. The mass of the block effects the amount of friction being created while being pulled across the cork friction board. The more mass the block has creates more friction than the blocks with less mass. To find this out in my tests, I used the spring scale the measure how the amount of mass effected the friction on the cork friction board. From these tests, I have found that the more mass the block has, the more friction that is created on the cork friction board. The block with the least amount of mass (mass: 132.5g with a force of  0.5N average) and the block with the most amount of mass ( mass: 562.9g  with a force of 2.8N average) I can see that with more mass more friction. As these tests have showed my hypothesis is correct, the more mass the block has the more friction is created. The errors I found while doing my tests was, if you hold the spring scale in an incorrect way the results will be inconclusive as to the mass of the block with not being pulled evenly and will not give you an accurate measurement of friction being created. I found this out because I held it in that incorrect way and the measurement was way off compared to the  correct measurements. I have learned from my experience in these texts, is that friction is in everything we do and that without friction we wouldn't be able to do anything the same on the earth. My experiment applies to the real world in many ways, as to when we walk or run, our feet make friction against the ground while we are doing these activities, the mass of our bodies effect the amount of friction we are creating on the ground. Another question that could come up with this experiment and its results is if an object has more or less mass will that affect the amount of area it will travel with a push or pull?  ]]> 2019-02-07 19:31:22 UTC https://padlet.com/j_rohde/o8lhbw8ykiu6/wish/328939314