Recent content by Torunn

ok, thank u :)

ah, Ok, so then it is correct? thank u :) :)

Dean Barry: but the question is for only one wheel, wouldn't that be wrong ? or just don't i understand it?

but isn't omega = v/r ? where does the 2pi fit in?

ok, so I can not use: (omegaf- omegai)/time = alpha ? can I use at= r*alpha?

T= 0.5MR^2*alpha T = 0.5*18*0.25^2*32.7= 18.4Nm Is this correct you think? Should I use the mass of the car or the wheel?

Ok, so I find alpha by finding omega with the velocity and time?

If I understand you correct: If i have the angular acceleration I can find the torque with F = ma? :)

And how do I do that? :)

Yes, but can I use this equation or will it be wrong? :)

A Tesla of mass 2100 kg accelerates from rest to 100 km/h in 3.40 seconds, and we will assume that the acceleration is constant. In the following, ignore resistance from the air and the rolling friction of the wheels against the surface. The wheels are rolling without sliding (no...

Homework Statement b) What is the required torque that the engine has to provide for each wheel, to have this acceleration? This is the question and this is the information given. vi = 0 vf = 100km/h mcar = 2100 kg radius wheel = 0,25m mwheel = 18 kg t= 3,4s the wheel has a moment of inertia...

I put the two different ac equal to each other, and then i found theta by solving that one.

r= sin(theta)*3 is the one I would use to find the r or angle.

Vectors, and xf=xi+ vi*t + 1/2at^2 and, Vf=vi+at its the chapter "motion in two dimensions", next chapter is the laws of motion, so then we start to use a full body diagram and Newton.