Name
Section
Date
Unit 4
Lesson 6
Homework
Directions:
1. Watch this Khan Academy: Intro to Springs and Hooke’s Law video (10 min 5 s) to help you review Hooke’s
Law if needed.
2. Refer to this Grade 6 Physics Reference Sheet and your knowledge of science to help you solve problems 1
to 4. Show your work and use correct units of measurement.
Problems:
1. A scholar experimented with a spring. They recorded the displacement of the spring by hanging
different masses on a vertical spring.
a. Plot the data in the space provided.
b. Explain if the spring used by the scholar obeys Hooke’s Law? If yes, then determine the spring
constant.
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Force (N)
Displacement: Δx (m)
4
0.05
17
0.1
38
0.15
68
0.20
106
0.25
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FOS II, Unit 4: Mesmerizing Motion
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FOS II, Unit 4: Mesmerizing Motion
2. Using the graph below, determine the spring constant, and write the Hooke’s law equation for this
spring. Pay close attention to the axes of the graph.
3. How far will 20 N of force stretch a spring with a spring constant of 140 N/m? How far will a 50 N force
stretch the same spring?
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FOS II, Unit 4: Mesmerizing Motion
4. A spring is stretched 0.15 m, and the force applied was 1500 N. What is the spring constant?
5. A spring is stretched 0.75 m by using a force of 30 N. What is the spring constant?
6. How far will a hanging 0.400 kg object stretch a spring if its spring constant is 300 N/m?
7. A hanging 7.5 kg object stretches a spring 1.1 m. What is the spring constant?
8. A spring has a constant of 875 N/m. What hanging-mass will cause this spring to stretch 4.5 m?
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FOS II, Unit 4: Mesmerizing Motion
9. A spring with a spring constant of 25 N/m is stretched 65 cm. What was the force used?
10. A 75 N force stretches a spring 175 cm. What was the proportionality constant?
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FOS II, Unit 4: Mesmerizing Motion