Last Activity: 12 Years ago
i think -6
You are right the answer is 6 N/m but how can i solve it.Please Explain.
F(x)=x2-6x
as x≈0 ,x2≈0 (as x2<<x)
so neglegting second degree term of x in expression, we get
F(x)=-6x
on comparig with
F(x)=-kx
we get k=6 units
for small displacements x2 and other higher powers of x can be neglected in comparison to x.
so F(x) = -6x approximately.
therefore k = 6.
so the force constant in shm is 6 N/m.
please approve.
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