A spring of spring constant 100 N/m is stretched by 0.02 m. What is the restoring force?
Answer and explanation
Correct answer: A. 2 N
- Step 1: Hooke's law: .
- Step 2: N.
Answer
2 N.
Why not the others: 5000 N: force is divided by extension. 0.02 N: that is the elastic energy formula without the right units. 100.02 N: the numbers are added.
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