Recent content by Avaron Cooper

Thank you very much jbriggs444!

Can I equal the momentum of the moving object to the momentum of the whole system?

I I know what the center of mass is but I don't know any equation to find the center of mass. If I am going to find the center of mass I would take the torques and find it.

I can't come up with one... Can you please help me with that sir?

One particle is 2 kg while the other is 3 kg and 6 N is applied on 3 kg one only.

⭕2kg ⭕➡6N. . 3kg

Can we consider the 6N force is applied to both the particles when considering them as one system eventhough they are not connected?

U is initial velocity and is zero. Therefore I took the initial velocity of the center of mass as zero.

Homework Statement two particles of 2 kg and 3 kg are at rest . a 6 N force is exerted on the 3 kg particle at t=0. what is the speed of the center of mass at t=5s? Homework Equations F=ma v=u+atThe Attempt at a Solution first i applied f=ma to the 3 kg object and got 2 as the accn. And...

okay.. Now I understand. Since Al has the higher alpha it should have the lower initial length. Thank you very much!

Homework Statement the difference in length between an aluminium rod and a copper rof at 0 degreeC is 2cm. If they have the same difference in length at any temperature difference, what are the length of the 2 rods at 0 degreeC.? Al - expansivity = 20*10^-4 K^-1 Cu- expansivity= 15*10^-6 K^-1...

I don't understand why the mass on the right side has an acceleration. Is it because theta varies with time and therefore the tension also varies, and the vertical forces are not in equillibrium?

When considering the mass on the right, it does show any vertical displacement. But it shows a horizontal displacement. Since the string is not considered to be elastic, let's take its length to be a constant. At the starting point the masses are at equal height so when the mass on the right...

According to Avogardro's law, at the same temperature and pressure, equal volumes of different gases contain equal number of molecules. So if we apply this to pV= nRT, pressure also becomes equal.

Thank you very much!