Recent content by LukeOD

Thanks a lot for your help so far hunt_mat. Sorry to keep asking the same thing but I'm still really stuck on the best way to use the solutions to make the predictions and then compare them. I've got a solution for s and a solution for v for both relationships. The solution in terms of v for...

Oh ok. If I used the solution in terms of s to find a value for k [using my experimental results], would the same value of k work then in the solution for v?

I've been plotting height against time graphs but the predictions give almost completely straight lines for both v and v^2. The experimental results aren't completely straight but don't look like tanh curves either.

Ok thanks. How do you think would be best to go about using that solution to make some predictions? I've got 3 sets of experimental data, each using a different mass and each consisting of 5 results [drop height and time]. I've tried using the greatest time from each set and then using...

Thanks for the reply hunt_mat. I used the first part of the DE you suggested [mdv/dt=...] and then solved it for v. Once I'd done that I then integrated to get a solution in terms of s. I used the conditions that s=0 and v=0 when t=0 to obtain the attached solution. Sorry I can't use...

Hi, I'm half way through a piece of differential equations coursework and I'm having serious trouble with a couple of things. The brief of the coursework is to investigate the effects of air resistance on falling objects by conducting an experiment to obtain a set of results, then using...