# Recent content by Ridonkulus

1. ### Wave Problem (difficult)

Sorry I haven't been able to try this until just now. Thanks for all of the help everyone. I got the problem (for anyone that is curious the answer turned out to be .055128 N) using the help OlderDan gave me, thanks again.
2. ### Wave Problem (difficult)

I'm sorry, I missed that part of my work. I used the equation -kAsin(kx-wt) (this came out to be -(-1.7)*.08*sin(-2.5*.25*2pi/-2.5)) to get the sine factor. The number I got was .136, using half of the wave length. This is what I plugged into the sin(theta).
3. ### Wave Problem (difficult)

Homework Statement At time t = 0, consider a 1/2 wavelength long section of the rope which is carrying the wave y = 0.08 cos(1.7 t - 2.5 x) between two points which have zero displacement (y = 0). Find the total force exerted by the rest of the rope on this section. Neglect any effects due...
4. ### Center of Mass F/m = a

Oh, ok thanks a lot!
5. ### Center of Mass F/m = a

For some reason I can't seem to figure this question out. I get the feeling it's much easier than I'm making it. But here it is: Ball 1, ball 2, and ball 3 have masses 1 kg, 2 kg, and 3 kg respectively, and are initially arranged at x = 1 m, x = 2 m, and x = 3 m respectively. y = 1 m for...