Recent content by Cronomius

Ok, think i get it, will look into it when i get time :D Again thanks for the help :D

So use Hook's law to find the time it took?

At the moment it doesn't :P

Ok so using my equation above, and then letting x=l since the chain has traveld down the entire slope the equation simplifies down to .5mglsinθ = .5mv^2 which gives me a velocity of v=√glsinθ But then i also had to find how long this took, but since the system has a variable acceleration i...

Thanks for all the help :D I like this forum :D Having a place to go to get the help I need is a great asset :D

and will look at those problems now :D thanks :D

Ok, seing as this isn't suppose to be all that complicated making those assumptions seems like a fair bet :D And i take it that my equation using conservation of energy was wrong? even when using those assumptions?

Earlier you made it seem like it was possible to solve this problem using conservation of energy as well, but i needed to use the center of mass of the chain. could i then use mglsin(θ)/2 = mgl((l-x)/l)sin(θ)/2 + .5 (mx/b)v^2 ?

And then I'm confused again :P At the end of the ramp the normal force changes from mgcosθ to just mg, but seing as this is only in a vertical componet as you said it has no impact on the velocity, this i get.

Ok, so then i need to take the integral of the acceleration wquation i got? or do i need to redo that as well?

Yeah b was suppose to be l there :P sorry Energy is conserved in the system. When i used F=g(m(l-x)/l)sin(θ) I get the acceleration to be: a=g((l-x)/l)sin(θ) Then using v=v0+a(t-t0) where v0=0 and t0=0 i get: v=gt((l-x)/l)sin(θ) But i can solve it using conservation of energy as well...

So using F=ma i can use a=gsin(θ) and then the mass that is still on the incline as m(b-x)/b? so F=g(m(b-x)/b)sin(θ)?

I'm confused :P Yes i am taking calculus I

My first post :D I have an incline of angle (θ) to the horizontal, and a chain of length (l) of a uniform mass (m), I place the chain so that one end is at the bottom of the incline, the entire system is frictionless. I need to find what the velocity is as the last end leaves the incline, and...