Recent content by coltin.walsh

Homework Statement see: http://www.flickr.com/photos/55153239@N03/6371848305/ Homework Equations vp = w/k vg = dw/dk The Attempt at a Solution I know the relationship of: vg = vp(1+lambda/n * (dn/dlambda)) but i don't know where to go from here..

you don't need to worry about the pendulum effect, or relative accelerations, since it asks for the accelerations at the instant it is released. You know the normal acceleration of the sphere is 0, since V=0 at the instant it is released. Solve for tangential acceleration, and tensions, the...

Dynamics Problem Help Needed! Homework Statement K. So i have no idea how to even start this problem. can someone please explain how step by step? Thanks a million! http://www.flickr.com/photos/55153239@N03/6247406013/ Homework Equations The Attempt at a Solution I have no...

Is it right to use the cable constraint equation of: 2Xa+3Xb=constant. then taking the derivative to get: 2Va+3Vb=0? Or is that not correct?

Dynamics Help Needed! Relative velocities problem Homework Statement see link: http://www.flickr.com/photos/55153239@N03/6199846646/ Homework Equations Can you please help me solve this problem? I have 3 unknowns: Va, Vb, and Thetha; but only two equations Vb(cos(theta)) -...

so i would have s = 3/8 R. and using the second equation: 1.5/(3R/8) + 1/s' = 0 s' = -R/4 image is located a distance R/4 to the right of V.

Homework Statement An object is situated at various points relative to V. The light is then reflected by the mirror, and the final image is viewed by the observer. http://www.flickr.com/photos/55153239@N03/6196518731/ Homework Equations 1/s + 1/s' = 2/R na/s + nb/s' = (nb-na)/R...