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## Answers

*k.*The dimensional formula can be worked out by using the spring force formula i.e. F = kx . This gives k = F/x. Dimensionally [k] = [F]/[x] = [M1L1T-2]/[MoL1To] =

**[M1LoT-2]**

**.**

its unit is:

k units = Newton/meter = kg-m/sec^2//m =

**kg/sec^2**because the length unit (meter) cancels out.

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