Recent content by Mohamed BOUCHAKOUR

Okay great! I think I got it... Thanks for the help!

In my reasoning, the angle ##\psi## was not taken relative to a constant vertical line, but rather relative to the line that goes from the point of contact to the center of the bigger circle, so in this case, the mouvement that I will find, will be the relative mouvement of the disk (relative to...

Let ##\Theta## be the angle, following the movement of the center of the disk. In order to find the kinetic energy, we brake the movement of the disk into 2: The translation of the center of mass, and the rotation of the disk around it. So, the kinetic energy will be given by: $$T= \frac 1 2...

Homework Statement in tests to choose the most comfortable shock absorbents, 3 cars are used, with the same mass "m", and the same springs, but different shock absorbents. the graphs show the changes in car height when passing over a bump (y=0 being the normal state of the car). . . . -Witch...

Think of it this way: What are the forces affecting acceleration? And what are they liked to?

Didn't think about it this way, I'm just starting with probabilities, so I didn't know most of this, but you lead me to do some research in google, thanks for that :wink: Since i didn't know the Binomial Distribution Formula (didn't go over it in class), the only think i had was probability...

Probably not, since we didn't go over the Binomial Distribution Formula in class, it would be better to elaborate more.

Homework Statement In a given society, 15% of people have the sickness "Sa" , from them 20% have the sickness "Sb". And from those that don't have the sickness "Sa", 5% have the sickness "Sb" 1-We randomly choose a person. and we define: A:"the person having Sa" B:"the person having Sb"...

I think I've got it, thanks for the help ✌✌

Still can't see it...

Accelerating

In a way yes(the 18° angle) , but then the rope prevents it from continuing,

If somthing is attached If somthing is attached, it accelerate at the same rate as the bus. And if it's not (ignoring friction) it would roll back. But how does that help me?

Yeah, but the only forces i can think of are gravity and rope.

Homework Statement A ball with a mass of 200g, is hanged on the roof of a bus with a rope (it's mass is negligible), when the bus starts moving, the rope makes an angle of 18°. What's the acceleration of the bus? Homework Equations ΣF=m.a The Attempt at a Solution The first thing i thought of...