Recent content by drszdrsz

The last one: This is straightforward to show that there's no exist δ λ such that: -24.7= sin(2*δ)*sin(λ)*19.817 (this can be true only if δ λ are complex)

Thank you for the link:) it's very helpful.

Ok thanks a lot. ps. I'm not sure about solution. there mus be transitory solution too(otherwise the stationary solution that is sinusoid).

Do you mean that the force of spring should looks like this: Fs=-k(x-Asin(wt)) and now the differential equation will be: M_{1}\frac{d^{2}x}{dt^{2}}+b\frac{dx}{dt}+kx=k*Asin( \omega t) Now the differential is dimensionally consistent.But, is that correct??

Homework Statement http://fatcat.ftj.agh.edu.pl/~i7zebrow/rysunek.jpg tring constant is k, object mass is M_{1} Damping friction is b and we wiggle the top end of spring in the above diagram with amount Asin(wt) (Where A is a amplitude and w is a frequency). Homework Equations Spring...