A body of mass m is situated in a potential field U(x) = U0(1-cos αx ) when U0 and α are constants. Find the time period of small oscillations
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The time period of small oscillations can be represented as :
- As per the question, U(x) = U₀(1-cos αx )
- Differentiating both sides by d(x):
F=
= -U₀αsinαx
= -U₀ααx ( for small αx , sinαx ≈ αx)
= -U₀α²x
- As we know , F = -kx
- so, k= U₀α²
- Therefore, Time period (T) =
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