How to use F = -kx?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
To apply Hooke's Law:
- Identify spring constant (k) - measure of stiffness
- Measure displacement (x) from natural length
- Calculate force: F = kx (magnitude)
- Note direction: Force always opposes displacement
Example: A spring with k = 200 N/m stretched 0.1m: F = 200 × 0.1 = 20N (opposing the stretch)
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