Recent content by Kumos

Thank you :)

Thanks again for everything! If the coordinates are the ones of the displacement of the object and not the ones of the force... isn't it better to modelize the object on an incline plane (since there are both x,y components)? Is it that regardless of the plane, the displacement of the object...

Isn't that Having set my y-axis to be perpendicular to the incline plane, yes I did think it was in equilibrium on that axis. It's not the case? Having an incline y-axis makes the object move solely on the x-axis no? No, I'm referring to me spending 20min writting a post and still not...

Thanks for your answer but using the derivatives I find ay = 18t m/s2 And at t = 2.00s I get a net force of 90N on the y-axis (m*a). I guess my main question still hasn't been adressed (\SigmaFy & \SigmaFx components) and I'm spending more time posting here then adressing the problem...

I'm sorry I forgot to mention t was in seconds so yes, you're right about the time dependance. Yeah I thought about acceleration but... Acceleration = displacement/time ax = x2 -x1 / t2 -t1 ax = 4 - (-4) / 2 -0 = 4 m/s2 ay = y2 - y1 / t2 - t1 ay = 21 - (-3) / 2-0 = 12 m/s2 But...

Homework Statement A 2.50kg object is moving on a plane with coordinates x=2t2-4 and y=3t3-3. Find the magnitude of the net force at t=2.00s Homework Equations \SigmaFy = 0 (no movement on y axis) \SigmaFx = m*a (mass x acceleration) The Attempt at a Solution Alright, first of all...