HP Cycle 7

🟢 5: M 10/14 - relationship between force, mass, and motion - planning & investigation

Today, we'll start a big lab for this marking period. We will design an experiment to determine the relationship between force, mass, and motion.  We will talk about how we would go about finding the relationship between THREE different variables.  

A fan cart experiences a constant net external force.  By the end of this lesson, you should be able to describe the motion of a fan cart by looking at the position vs time and velocity vs time graphs of the cart.  

Homework:  Review your notes on the lab so you are ready to start taking data next class.  ❗Newton's First Law Quiz on Tuesday, October 22nd.  ❗Lab quiz ALSO on Tuesday, October 22nd.

🟩 5: W 10/16 - relationship between force, mass, and motion - data collection

Today, you'll work getting data for the labs:

• finding the relationship between force and acceleration.  

• finding the relationship between mass and acceleration.

By the end of the period, you will have all your data for both lab experiments.  

Homework:  Make sure everyone has the data from the experiment(s) you performed today.

💚 5: Th 10/17 - relationship between force, mass, and motion - analysis

If you did not perform two experiments last time, you'll either quickly get the data from another group or finish gathering the data with equipment.

Most of you're time today will be working towards analyzing the data.  You'll transfer the raw data from your lab notebooks to your own personal spreadsheet.  (Each student is responsible for their own.  It is an individual assignment, but you may discuss as a group if you have questions.)  Ultimately, you're looking to find the MATHEMATICAL relationship between:

• force and acceleration, and

• mass and acceleration.

By mathematical relationship, we mean equation.  In order to do that, you must graph your data.  You may need to linearize the data if it is not already a proportional relationship.  (See determining relationships from graphs which you should have previously read.)  Collaboratively, you'll work through your understanding of linearizing any non-linear graphs.   

On the distributed worksheet, (📄 LAB: N2L Pivot Lab findings & final equations), write down the equation you found for the mathematical relationship between force and acceleration for your particular fan cart mass.  Also, write down the equation you found for the mathematical relationship between mass and acceleration given a particular fan speed.  Don't forget that all numbers in your equation (slope & intercept) must have units.  Units are embedded inside variables, so you do not have to write units with variable letters.  Make sure your equations of each line do NOT contain x and y, but rather m, F, and a accordingly.  

Homework:  Finish you analysis (getting a graph and finding the equation of the graph) by next class.  Remember to complete 📄 LAB: N2L Pivot Lab findings & final equations.  ❗Newton's First Law Quiz on Tuesday, October 22nd.  ❗Lab quiz ALSO on Tuesday, October 22nd.