I'm confused about this problem. (a diagram is included below)..(adsbygoogle = window.adsbygoogle || []).push({});

The 0.5 kg collar slides with negligible friction along the fixed spiral rod, which lies in the vertical plane. The rod has the shape of the spiral r = 0.3[tex]\theta[/tex], where r is in meters and [tex]\theta[/tex] is in radians. The collar is released from rest at A and slides to B under the action of a constant radial force T = 10 N. Calculate the velocity v of the slider as it reaches B.

Could someone help me get this started

I think it could be written [tex]{{\int_{\frac{\pi}{2}}}^{\pi}T\cdot(0.3)d\theta= \frac{1}{2}mv_f^2[/tex]

..is this even valid. If its not, then if I just wrote [tex]T\cdot{dr}[/tex], then how do I find T in terms of r, or find the relationship between T and the direction of dr.

Thanks for any input.

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