Recent Changes

1. 1.Phospholids, proteins, carbohydrates
2. 2. The phosphalids are packed tightly against each other, the hydrophilic are next to each other, the hydrophobic, are connected to another hydrophobic on the other side, where the hydrophilic are packed together again
3. 1. They act like gates.
2. They help control chemical reactions
3. They help cells communicate
4. The carbohydrates allow different types of cells recognize each other.
{file://localhost/Users/user-kl723/Library/Caches/TemporaryItems/msoclip/0clip_image001.png} The GreatBalancing ActLever Lab
Questions How is effort force affected when applied closer to the fulcrum?

http://www.youtube.com/watch?v=ezehTUsQqFE
Sorry i couldnt send it to you, but i decided to post this, hope it helps.

Controlled:
Materials: Ruler, Pencil, Weight, GTX EXPLORER™
Instructions:Procedure:
1. The smaller end of the meter stick will be for the load force. (The 0cm end). This means that the load you are trying to lift should be at this end.
2. The larger end of the meter stick (the 100-cm end) will be for the effort force.
0.5 N
20 cm
Conclusion: the position of the fulcrum and effort force/ resistance force effects the amount of newtons and energy marginally with each test. even though some of the testsOur hypothesis was correct, but our experiments might not been accurate (incorrect testings), most of them make sense.because multiple different people recorded different results. other then that factor, i believe that i did well, and hat it was a success. but i do not believe that our hypothesis is correct, and might someday prove myself wrong.

Title: Friction and Force
Research Question: Which object takes the most force to pull?
Hypothesis: If cork is tested then it should take more force to pull, because its quality of friction
Material: You will be given three different surfaces, mass and a Newtonmeter.
1.
Surfaces
Test 1
Test 2
Test 3
Total
Average
Cork
3.00N
2.50N
2.00N
7.50N
2.50N
Plastic 1
.50N
.50N
.50N
1.50N
.50N
Plastic 2
.70N
.50N
.60N
1.80N
.60N
Carpet
1.00N
1.20N
1.50N
3.70N
1.23N
2.
250g
If the weight is higher, then the force required increases, because of the amount of weight.
Weight
Test 1
Test 2
Test 3
Average
1000g
3.00N
2.80N
3.50N
3.10N
500g
2.00N
1.80N
1.50N
1.76N
200g
.50N
.80N
.80N
0.7N
100g
.50N
.50N
.30N
0.43N
50g
.05N
.10N
.15N
0.10N
Surfaces
Test 1
Test 2
Test 3
Total
Average
Cork
2.50N
2.00N
2.40N
6.90N
2.30N
Plastic 1
1.20N
1.00N
1.05N
3.25N
1.08N
Plastic 2
0.60N
0.70N
1.00N
2.30N
0.76N
Carpet
1.60N
1.40N
1.40N
4.40N
1.46N
Weight
Test 1
Test 2
Test 3
Total
Average
2K
2.50N
2.50N
2.40N
1.5K
2.00N
1.90N
2.00N
1K
1.50N
1.60N
1.50N
.5K
0.60N
0.90N
0.80N
Conclusion: Yes, our hypothesis was correct, but there must be factors that might sway in the favor. for instance, one of our recordings was incorrect or could be incorrect. because i was the tester, i was supposed to test everything, but i accidentally let rana have a go, but she didn't know how hard to push or pull, so this could of been incorrect.
Variables:
Independent variable: Force
Dependent variable: Weight
Controlled variable: Materials

Home Work:
Weight
Test 1
Test 2
Test 3
Total
Average
2K
2.50N
2.50N
2.40N
7.40N
2.46N
1.5K
2.00N
1.90N
2.00N
5.90N
1.96N
1K
1.50N
1.60N
1.50N
4.60N
1.53N
.5K
0.60N
0.90N
0.80N
2.50N
0.83N
Conclusion: Friction is increased with weight, and different surfaces. If the friction is high, then it requires more force to keep at a continuous speed. Though, if I had anti-friction, then my speed would be constantly excelled. Unfortunately, we don’t have the substances in this universe.
Variables:
Independent variable: Force
Dependent variable: Weight
Controlled variable: Materials
{file://localhost/Users/user-kl723/Library/Caches/TemporaryItems/msoclip/0clip_image001.png} The GreatBalancing ActLever Lab
Questions How is effort force affected when applied closer to the fulcrum?
Hypothesis
the fulcrum, then it requires resistance force. Because the effort required to lift something close to you is less then something far away from you.
Variables
Independent: The load’s mass.
Dependent: The amount of force.
Controlled:
Materials: Ruler, Pencil, Weight, GTX EXPLORER™
Instructions:
Effort Force needed (newtons)
Effort Force Distance (cm)
50
100
49
1.0
49
50
100
49
1.5
49
50
100
49
1.6
49
50
100
49
1.4
49 cm
100 g
49 cm
1.0 N
49 cm
50 cm
100 g
49 cm
1.5 N
49 cm
50 cm
100 g
49 cm
1.6 N
49 cm
50 cm
100 g
49 cm
1.4 N
49 cm
Try these other fulcrum placements and find several effort placements that will work.
Fulcrum At (cm)
Effort F
orce Distance (cm)
40
100
40
0.3
60
40
100
40
0.6
50
40
100
40
3.5
10
40
100
40
1.2
30
30
100
30
<0.1
70
30
100
30
0.1
50
30
100
30
0.5
20 cm
100 g
40 cm
0.3 N
60 cm
40 cm
100 g
40 cm
0.6 N
50 cm
40 cm
100 g
40 cm
3.5 N
10 cm
40 cm
100 g
40 cm
1.2 N
30 cm
30 cm
100 g
30 cm
<0.1 N
70 cm
30 cm
100 g
30 cm
0.1 N
50 cm
30 cm
100 g
30 cm
0.5 N
20 cm
Conclusion: the position of the fulcrum and effort force/ resistance force effects the amount of newtons and energy marginally with each test. even though some of the tests might not have been accurate (incorrect testings), most of them make sense.

Dependent variable: Weight
Controlled variable: Materials
ActLever Lab
Questions
Questions How is the fulcrum?
Hypothesis
If the effort force is close to the fulcrum, it requires more force to move the resistance force.
Dependent: The amount of force.
Materials: Ruler, Pencil, Weight, GTX EXPLORER™
Instructions:
1.
1. The smaller this end.
2.
2. The larger effort force.
3.
3. Set up the middle.
4.
4. Put a in place.
5.
5. Apply a the load.
6.
6. Record the example below).
7.
7. Repeat steps Force Distance.
8.
8. Record the data table.
Fulcrum At (cm)
Load at End of Ruler (g)
1.4
49
will work.
Fulcrum At (cm)
Load at End of Ruler (g)
Load distance (cm) (from fulcrum to load)
Effort Force needed (newtons)
Effort ForceF
orce Distance (cm)
40
100
0.5
20
Conclusion: the position of the fulcrum and effort force/ resistance force effects the amount of newtons and energy marginally with each test. even though some of the tests might not have been accurate (incorrect testings), most of them make sense.

Home Work:
Show my Parents my Wiki.
Weight
Test 1
Dependent variable: Weight
Controlled variable: Materials
{file://localhost/Users/user-kl723/Library/Caches/TemporaryItems/msoclip/0clip_image001.png} The GreatBalancing ActLever Lab
Questions How is effort force affected when applied closer to the fulcrum?
Hypothesis
If the effort force is close to the fulcrum, it requires more force to move the resistance force.
Variables
Independent: The load’s mass.
Dependent: The amount of force.
Materials: Ruler, Pencil, Weight, GTX EXPLORER™
Instructions:
1. The smaller end of the meter stick will be for the load force. (The 0cm end). This means that the load you are trying to lift should be at this end.
2. The larger end of the meter stick (the 100-cm end) will be for the effort force.
3. Set up your lever like a meter stick with no weights, and the fulcrum close to the middle so the lever acts like a see-saw, balanced in the middle.
4. Put a load of 50 g at the LOAD END of the lever. Put the load as close as possible to the end of the lever. Be careful that the fulcrum stays in place.
5. Apply a force by pushing the Force Sensor down on the FORCE END of the lever. Add just enough to lift the load.
6. Record the newtons you need to lift the load. (I've done this one as an example below).
7. Repeat steps 4- 6 changing the Effort Force Distance.
8. Record the data in the data table.
Fulcrum At (cm)
Load at End of Ruler (g)
Load distance (cm) (from fulcrum to load)
Effort Force needed (newtons)
Effort Force Distance (cm)
50
100
49
1.0
49
50
100
49
1.5
49
50
100
49
1.6
49
50
100
49
1.4
49
Try these other fulcrum placements and find several effort placements that will work.
Fulcrum At (cm)
Load at End of Ruler (g)
Load distance (cm) (from fulcrum to load)
Effort Force needed (newtons)
Effort Force Distance (cm)
40
100
40
0.3
60
40
100
40
0.6
50
40
100
40
3.5
10
40
100
40
1.2
30
30
100
30
<0.1
70
30
100
30
0.1
50
30
100
30
0.5
20

Work: Force multiplied by displacement
Power: Work Divided by time
Fulcrum: the pivot point of the lever.
Resistance force: the force that is resisting the force.
Load: the thing that is being moved
Applied force: the force that is being applied.

0.80N
2.50N
0.830.83N
Conclusion: Friction is increased with weight, and different surfaces. If the friction is high, then it requires more force to keep at a continuous speed. Though, if I had anti-friction, then my speed would be constantly excelled. Unfortunately, we don’t have the substances in this universe.
Variables:

2.50N
2.40N
7.40N
2.46N
1.5K
2.00N
1.90N
2.00N
5.90N
1.96N
1K
1.50N
1.60N
1.50N
4.60N
1.53N
.5K
0.60N
0.90N
0.80N
2.50N
0.83
Conclusion: Friction is increased with weight, and different surfaces. If the friction is high, then it requires more force to keep at a continuous speed. Though, if I had anti-friction, then my speed would be constantly excelled. Unfortunately, we don’t have the substances in this universe.
Variables: