K keml New member Joined Dec 22, 2016 Messages 3 Dec 22, 2016 #1 Hi I have this f=ma equation for bicycles that I want to rearrange for v, but I can't figure out how to do it. P/v - [ (0.5 * C * A * v^2) + (fr * m * g * cos (a)) + (m * g * sin(a)) ] = 0 I'm not sure how to consolidate those two v's?
Hi I have this f=ma equation for bicycles that I want to rearrange for v, but I can't figure out how to do it. P/v - [ (0.5 * C * A * v^2) + (fr * m * g * cos (a)) + (m * g * sin(a)) ] = 0 I'm not sure how to consolidate those two v's?
P Paul Belino New member Joined Mar 21, 2016 Messages 27 Oct 8, 2019 #2 Use substitution to make it easier. So P/v - [Av^2 + B + C] = 0 *v throughout (assuming v is NOT equal to 0) P - Av^3 - v * (B+C) = 0 Let B + C = D Then we get Av^3 + vD - P = 0 If you want to go further you would have to look at solving cubic equations ?
Use substitution to make it easier. So P/v - [Av^2 + B + C] = 0 *v throughout (assuming v is NOT equal to 0) P - Av^3 - v * (B+C) = 0 Let B + C = D Then we get Av^3 + vD - P = 0 If you want to go further you would have to look at solving cubic equations ?
