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Per NCERT §5.9, the SI unit of the spring constant k is which?
AJ m⁻¹
BN m
CN s
DN m⁻¹
Answer & Solution
Correct answer: D. N m⁻¹
NCERT §5.9: F = -kx ⇒ k = F/x has unit N/m. Dimensions [M T⁻²].
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