Pulley Lab

Purpose:
In class last week we learned about the relationship between force and what pattern is observed. To find out these two things we tested two pulley experiments by building one lab with one pulley and another lab with two pulleys. Attached to these pulleys will be 200g of weight on each side and the second pulley will have 100 g of weight on side and 200 g of weight on the other. . By using these pulleys we can figure out the relationship and pattern by measuring the distance between the the weight to the "floor" and then  measuring the distance the second time of how much you moved the weight.

Key Information:

In Experiment 1 my group, Group 4, and I meausured .1 meters of the initial length of the weight from the floor( weight on the left). After, we pulled/moved the pulley down on the right side and measure how much the weight moved on the left from its initial position. As you can see from the picture above we ended up with .1 also. So the weight moved exactly 10 cm. from its initial position

In Experiment 2 we measured .1m of the initial length of the weight from the floor (weight on the left). Then we moved/pulled the pulley on the right and measure how much the weight on the left moved. Above you can see the distance is .05m.

Key Conlcusion:

As a result you can see that in Experiment 1 it takes .1m of force to move exactly .1m of string from the pulley and in Experiment 2 it takes .5m or half the force to move .1m of string from the pulley. As a result we concluded that force and distance are inversely proportional. The greater applied force requires less distance(like in ex.1) and the lesser applied force requires more distance(like in ex.2)

Real World Connection:

An example of a real life pulley are zip lines because it shows us a good example of how greater applied force requires less distance and that lesser applied force requires more distance. When you go zip lining sometimes you have to keep your hand/s resting at the top of the pulley, like in the picture, because when you apply force on that pulley the slower you will go, which means less distance. If you don't rest your hands at the top and applying no force at all  then the faster you will go down the zip line, which means more distance.