2. LAB #2 HOOKE’S LAW –FUN WITH SPRINGS

3. GOALS TO DISCOVER THE RELATIONSHIP BETWEEN THE FORCE APPLIED TO A SPRING VS THE STRETCH –(HOOKE’S LAW) TO DETERMINE THE SPRING CONSTANT (k) OF A SPRING TO USE INTERACTIVE PHYSICS TO SIMULATE HOOKE’S LAW

4. PROCEDURE CHOOSE 3 DIFFERENT SPRINGS –GIVE EACH A DISTINCTIVE NAME HANG EACH SPRING. MEASURE INITIAL, UNSTRETCHED LENGTH HANG MASSES FROM EACH SPRING, MEASURING THE STRETCH CAUSED BY EACH MASS REPEAT FOR ATLEAST 5 DIFFERENT MASSES. REPEAT EXPERIMENT USING INTERACTIVE PHYSICS

5. MASS vs WEIGHT m W W = weight g = 9.8 N/kg W = mg

6. Measure Spring Stretch L1L1 L2L2

7. L2L2 L1L1

8. DATA TABLE

9. GRAPH #1: CHUNKY STRETCH (m) FORCE (N)

10. GRAPH #2: PEE-WEE STRETCH (m) FORCE (N)

11. GRAPH #3: SLIM WHIT STRETCH (m) FORCE (N)

12. WRITE-UP ABSTRACT: –BACKGROUND (Intro, Goals) –METHOD SCREEN SHOT OF I.P. WITH VECTORS ADDED (W,  L) DATA TABLE GRAPHS –TRENDLINES –SLOPE ANALYSIS CONCLUSION

13. Lab #2: Hooke’s Law Post lab Analysis

14. FORCE VS STRETCH STRETCH (m) FORCE (N) F   L F LL = slope = k k = “spring constant” k = F/  L (N/m) = constant

15. HOOKE’S LAW k = F/  L F = k  L

16. SPRING CONSTANT (k) k  F The bigger the “k”, the stiffer the spring

17. Hooke’s Law STRETCH (m) FORCE (N) Spring A: stiffest Spring B k = slope Slinky k ~ 0 Spring A