Hello,

Can you finish up the data in the table and do a calculation on how you got the answers with the help of PHET's simulation on masses and springs

https://phet.colorado.edu/sims/html/masses-and-springs-basics/latest/masses-and-springs-basics_en.html

Go to LAB section of the simulation:

Initial S

etup:

1. Set mass to 50g

2. Set spring strength to lowest setting we will call this spring strength 1

3. Turn on

4. Get ruler

5. Put ruler in place 0 at blue line. Do not move ruler again until we do a second spring

6. Place the 50g weight on the spring. Note: we always use the orange known mass here.

7. Hit stop. It will stop at green line.

8. Record mass (in kg) and distance (in m) (blue to green) in Data table

9. Move red line to green line

10. Change the mass to 100g using the slider.

11. Push Stop

12. Record mass, the corresponding weight and distance (blue to green) in the data table

(The red to green merely shows the extra stretch: used for reference only here)

13. Repeat for masses 150, 200 and 250

14. Select a new spring strength of 4 and repeat steps 5 to 13.

15. Select a new spring strength of 10 (the largest) and repeat steps 5 to 13.

For each unknown

Determine the unknown masses, using the graphs of each spring that you have created. Indicate the appropriate points on each graph. It would be great to color coordinate if you can.Record all results in the table below.

Spring Strength	K-value (Slope Value)	Mass of green unknown	Mass of blue unknown	Mass of pink unknown
1
4
10