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Steel ball oscillating in a tube
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[QUOTE="LCSphysicist, post: 6365035, member: 675151"] [B]Homework Statement:[/B] a) Find the frequency of vibration under adiabatic conditions of a column of gas confined to a cylindrical tube, closed at one end, with a well-fitting but freely moving piston of mass m. b) A steel ball of diameter 2 cm oscillates vertically in a precision-bore glass tube mounted on a 12-liter flask containing air at atomospheric pressure. Verify that the period of oscillation should be about 1 sec. (Assume adiabatic pressure change with γ = 1.4, Density of steel = 7600 [B]Relevant Equations:[/B] All below. The problem is easy to solve, the question i have is another about static. Why when we get: F = (-A*p*γ/l)y Can't we just substitute p*a = m*g? If this is a oscillation, it will be about some equilibrium position, where the net force is zero and which was the initial position of the body, in such position, p*a = m*g, but why this is wrong? [/QUOTE]
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Steel ball oscillating in a tube
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