How Is Displacement Solved in This Differential Equation?

AI Thread Summary
The discussion focuses on solving a differential equation related to displacement in a mechanical context. The equation involves a spring constant and leads to an expression for displacement, s, as a function of time, t. The transformation from arcsin to sin is highlighted, showing how to isolate s. The final expression derived is s = (v_0/k) sin(kt), which clarifies the relationship between displacement and the variables involved. Understanding this solution is essential for applying differential equations in mechanical dynamics.
LeDragonian
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It has been a while since I was involved with my differential equations. I am a mech student. I was trying out a sample problem from the dynamics book and came upon this equation.

k = some constant of proportionality for a spring pushing back a spring mounted slider.

(1/k) arcsin(ks/v_0) = t --> becomes s = (v_0/k) sin(kt)

which is an expression for displacement. I want to know how it is solved for displacement s.

Thank you.
 
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If you have an equation like ##arcsint=a## you can write it ##sina=t## here
(1/k) arcsin(ks/v0)=t
arcsin(ks/v0)=tk
then here apply what I did then we get
sin(tk)=ks/v0
then simply s is ;
sin(tk)v0/k=s
 
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Quarlep said:
If you have an equation like ##arcsint=a## you can write it ##sina=t## here
(1/k) arcsin(ks/v0)=t
arcsin(ks/v0)=tk
then here apply what I did then we get
sin(tk)=ks/v0
then simply s is ;
sin(tk)v0/k=s
Thank you. It reminded me of when I solve for theta in some other equations and it rightly should make sense.
 
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