Recent content by Mohamed Essam

Should i have to read those lectures only; nothing else ?! Any other books to read any videos to watch?!

Could you suggest me any textbooks that explain physics from the beginning?! PS : I'm good at math by the way

Class in writing! :D

Since i was 16 years old, i loved physics and i was looking forward to full study it and with a big focus on quantum mechanics, but i have a problem that the physics informations that i studied in school and now in university are not arranged and there are some missing informations that stops me...

My instructor was talking to us in inertia and he said that the example of heavy cars took more time to stop than lighter cars can be a good example of inertia, because heavy cars had greater inertia than light ones so their inertia wants to keep it moving and resists to be stopped , is that...

It looks like it's more complicated than what i think , my instructor mentioned this as example of inertia not a main reason , but thank you anyway.

Okay , but if it's wrong , could you tell me the reason behind this by a simple way or tell me what i have to search on the internet and understand it to know the reason ?!

Sorry but i don't understand , my professor of physics in my university tells us that it related by it's moment of inertia , so what it's the relation between Inertia and friction ?!

Why heavy cars took more time to stop than lighter cars to stop when braking ?? Is it related by Inertia , if yes then why it's related by Inertia because i don't understand the physical concept of inertia

Yeah , thank you so much.

Thank you for telling me the way of parallel axis theorem i wasn't know it , my physics professor in university didn't tell us anything about it and he puts it in an exam

by this equation ( Inertia at axis =Inertia at axis from centre of mass + mass*distance between the two axis^2 ) ??

1. The problem statement, all variables and given/known See attachment , it only gives me length of rod and it's mass and radius of sphere and its mass and the place of the axis Homework Equations I=mr^2 The Attempt at a Solution I tried to get the moment of intertia of rod by integration from...

But why you assumed that the horizontal acceleration = 0 , if i didn't know that it equals 0 i can't solve it , so i need to understand why it equals 0