Assignment: Hooke’s Law Investigation (PLEASE ANSWER SOON OR IM IN TROUBLE)
Purpose: The...
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Assignment: Hooke’s Law Investigation (PLEASE ANSWER SOON OR IM IN TROUBLE)
Purpose: The objective of this lab is to determine if Hooke’s law is a valid law to apply to a rubber band, and if it is, to determine the elastic constant of that rubber band.
Safety: Remember that the rubber band will rebound when the force is taken away. Be careful not to let it or the masses go flying!
Data Collection:
Trial #
Hanging mass (grams)
Initial length (cm)
Stretched length (cm)
Distance stretched (cm)
1
2
3
4
5
Graph of Hanging Mass vs. Distance Stretched:
Finding the slope:
1. Find two data points that are on the line of best fit. Record them here.
Trial #
Hanging mass (g)
Distance stretched (cm)
2. Slope equals (change on vertical axis) / (change on horizontal axis). Determine the change in the
Vertical axis (hanging mass) :
Horizontal axis (distance stretched):
3. Calculate the slope:
Questions
1. Did the data look pretty close to linear? Write a statement of conclusion about the rubber band and Hooke’s law. (Refer to the purpose statement at the beginning of the lab assignment.)
2. Hooke’s law is a linear relationship, which means it has an equation that looks like y=mx. In the general equation m stands for “slope.” Look at Hooke’s law (Fspring= k(Δx)). Which letter is in the same place in the equation as m was in the general equation? So what does the slope of the graph find?
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