Posted: January 20th, 2023

Circular Forces Lab

In this lab, you will be using the Physics Aviary website to take your

data to examine the relationship among force, mass, radius, and speed.

For this lab you will be working with partners so you have to decide

who will be taking data and turning in screenshots from the website,

who will calculate values for the lab, and who will make the graphs that

you will turn in along with this lab sheet.

Sample image from Circular Forces Lab:

Part A: Mass and Force Relationship

1. Go to the Physics Aviary link for the Circular Forces lab. Click Begin

to start the lab.

2. Make sure that your mass is 0.5 kg and your radius is 1.5 m for the

first trial…put those values in Table 1 below.

3. To start the apparatus to spin, click the Start button.

4. You will see the force probe/sensor changing values as it

measures the force of tension on the mass…find the average value

of force and write the value in Table 1.

5. Next you want to find the time it takes for the rope and mass to

complete 10 revolutions…to do this start the time when the rope

is at a point you can measure, start the timer, count out 10

revolutions, and stop the clock. Write down the elapsed time in

Table 1 below, reset the timer, and click the Stop button.

6. Lastly you want to find the speed of the rope spinning the mass.

20 x π x radius

Using the formula speed = , calculate the speed for

time

the first trial and write it in Table 1.

7. Repeat steps 2 – 6 for 4 more masses (notes: do not change the

random speed or radius values, maximum mass is 2.0 kg)

Table 1

Mass (kg) Radius

(m)

Average

Force (N)

Elapsed

Time for 10

revolutions

(s)

Speed

(m/s)

8. Be sure to take a screenshot of one of your trials.

9. Make a graph of force in N (y) vs. mass in kg (x) using your data in

Table 1 using Excel, Google Sheets, etc. Be sure to label the axes,

give the graph a title, and draw a best fit curve or line. You will

also need to get the equation for the graph as well with your

graphing program (note: your graph should be linear and your

equation should look something like this: y = ____x /- _____. )

Part B: Radius and Force Relationship

1. Make sure that your mass is 1.5 kg, your radius is 0.5 m, and your

random speed is

Place an order in 3 easy steps. Takes less than 5 mins.