Recent content by suchal

Got it finally. Thank you and dale.

Sorry but i still don't get it. You mean as distance which the object travels while being accelerated by force?

Work done= force.displacement In space, with no external forces, air drag, gravity etc if you apply a force to object if will move forever in the direction of force unless any resultant force act on it to change its momentum. In this case let's take force as 2N so we get w.d=2N.s s will...

Sorry then. I meant by my calculation which I showed on first page the momentum was not conserved. I will avoid this kind of statements. :)

That is exactly what i said in simple words. If the object has more mass a greater force will be required to accelerate it by the same amount.

F=ma, a=F/m, if m increase a decrease if F is same. So for the same force, if the object with larger mass will have smaller acceleration. When i say "doesn't make sense" it means i am talking about myself that the concept doesn't make sense to my weak mind. I never said it is wrong.

It is good to see how helpful you people are. And please don't be shy to ask question no matter how much knowledge you have, you won't be insulted. These discussions clear the concepts and answer the question which otherwise disturb us.

The next problem is that when we talk about momentum, the concept of inertia doesn't make sense. a little force will have some change on the momentum of the body. I think inertia is related to momentum. An object with large mass will have larger momentum so it will require more force to change...

When talking about conservation of momentum it is already clear that NO EXTERNAL FORCES ACT ON OBJECTS so those who raised this point should rethink about the concept of conservations of momenta. Secondly, we say momentum of ball is 2mv. 2mv=Mw.Vw, Mw->infinity, Vw->0 but their product still is...

There is a property of matter called inertia and it can not be ignored. Such a force can not make it move.

Elastic: A ball of mass much less than the wall collides with the wall. If the collision is elastic the kinetic energy of ball is unchanged. It means that kinetic energy of wall is zero before and after the collision. Therefore velocity of wall HAS NOT CHANGED. When Velocity is Zero momentum is...

Thank you everybody!

in E2=p2c2+m2c4 can anyone please tell me that are both sides of equations by dimensional analysis same? lets take E=mc², one side it is Nm while one other side it is Kg(c² is just a constant and not actual velocity in this case) please correct me. for some questions i m too curious to wait...

Everybody says that it is used in engineering or somewhere but how can you use it. in real world it is impossible to take square of any number and get negative answer. how can it have any use when it does not even exist. and people talk about imaginary plane, what is it? Thanks for helping...

completely no idea how to do. i don't need answer but rather explanation of how to do this. please tell me. i will be thankful.