Rubber Band Cart Launcher Lab

Purpose: The purpose of the Rubber Band Cart Launcher Lab was to see the relationship between the amount of stretch of a rubber band and how it has to do with the velocity (m/s). We also observed the transfer of energy during this lab.

Big Question: How are energy and velocity related?

Energy and Velocity are related because the higher the velocity, the more energy is being used.


Whiteboard/ Data from Lab:

This is the data that my group and I collected which shows the amount of stretch, velocity, and the energy that we got from our trials. 

On this whiteboard is our graph for the lab and the formula to find the kinetic energy.

Real World Connection
This lab connects to the real world because if you have ever been to a amusement park, they will usually have a drop zone ride. This relates to our lab because the higher you go up it will increase the amount of velocity and energy needed to come down. When you're at the top, there is potential energy and when you're moving there is kinetic energy.  
 

Rubber Band Lab

Purpose:
The purpose of the Rubber band lab was to see how much force was needed to stretch the rubber band a certain distance. We used the force probe to tell us the average force. The amount we stretched the rubber band was 1cm, 2cm,3cm,4cm, and 5cm.

The Big Questions:

How can we store energy to do work for us later? 

How does the force it takes to stretch a rubber band depend on the 

AMOUNT by which you stretch it?

We can store energy to do work for us later by stretching out the rubber band with more force. The further you stretch out the rubber band means that it will require much more force. To stretch the rubber band 1 cm, it only took .58 N of force, but when we stretched the rubber band 5 cm, it required 3.15 N of force. As you can see from these two examples from the lab, this shows the relationship between how far you stretch the rubber band to the amount of force is needed. 

Graph/ Data Table     

 

The whiteboard shows the data table of the rubber band lab. The graph shows the increase in the amount of force needed to stretch the rubber band further. Also included on the white board was a data table that showed the amount of energy used (J) and the displacement at equilibrium(X). The equation F= kx was used to find the energy.

Real World Connection:

The Rubber Band lab connects to the real world especially when talking about slingshots. Slingshots relate to the lab because when you pull back the rubber band, the rubber band will fly out which is what a slingshot does with an rock/pebble. The further you stretch out the rubber band, the more force will be needed. 

Pyramid Lab

Purpose of Pyramid Lab
The purpose of the Pyramid lab was to see how much force it took to move the car a certain distance up a ramp. After each trial, we would adjust the steepness of the ramp to see how much force it would take to move the car up. 

Big Question:
Big Question: Is the product of force and distance universally conserved?

As we observed from the three trials, the more force meant less distance, but the amount of work increases. The trend occurred in all three trials so it is universally conserved.  

How Pyramid Lab Connects to Real Life 
 The Pyramid Lab connects to our real lives when people on wheelchairs are going up a ramp to get up to places. For example, it may be to get in a van or maybe a bus. It takes a certain amount of force to move the wheelchair and also depends on the amount of distance the ramp covers. This is how our lab connects to real life.

Pulley Lab

Purpose of Pulley Lab

The Purpose of the Pulley Lab is to be able to build a simple machine and know about how force can support different masses. Also, the lab showed us about the relationship between force and distance.  

 Big Questions for Pulley Lab

 1. Force can be manipulated by changing the amount of mass that the pulley system is supporting.
2. The relationship that I observed between force and distance is the more force means less distance.  

Graph/Pulley System 

 My group and I used a whiteboard to make three graphs and put our data on it. We tested different kind of pulley systems with different amounts of strings to see how much force (N) was needed to move a certain distance. We concluded that more force = less distance. My group and I used the LabQuest 2 to find the amount of force that we were applying on the pulley system. 

 

 

 

 

 

 

 

 

 

 

How Pulley Lab Connects to Real World 

 The Pulley Lab connects to the real world in many ways. One example is when using a weight machine. The person using the machine chooses the mass that they want to lift and a certain amount of force is needed to lift the weight up. This is an example of a pulley system.

 

 

 

 

 

 

 

Purpose of Force vs. Mass Lab

The purpose of the lab was to find the relationship between force and mass by making a graph and data table with the given information from the brass masses. The brass masses that were put on the force probe told us how much force was acting upon it to support it at rest which was measured in Newtons(N).

How Lab Connects to Real World

This lab connects to the real world especially when needing to find out how much force you will need to lift something up or to move something out of the way. For example, the amount of force to move a boulder would be different than the force needed to move a pebble. The force also depends on the gravity around you. I learned that by knowing the relationship between mass and force, it will make it easier to calculate the amount of force needed to act on a particular object. Of course something with more mass will require more force to act on it.  

Graph and Data table

This picture shows the graph and data table that my group made using the information from the lab. The more mass that was added on required more force to support it. After the calculations, my group found out that Force=10(mass)