Recent content by Avaron Cooper

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    Center of mass and Newton's laws of motion

    Thank you very much jbriggs444!
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    Center of mass and Newton's laws of motion

    Can I equal the momentum of the moving object to the momentum of the whole system?
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    Center of mass and Newton's laws of motion

    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.
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    Center of mass and Newton's laws of motion

    I can't come up with one... Can you please help me with that sir?
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    Center of mass and Newton's laws of motion

    One particle is 2 kg while the other is 3 kg and 6 N is applied on 3 kg one only.
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    Center of mass and Newton's laws of motion

    ⭕2kg ⭕➡6N. . 3kg
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    Center of mass and Newton's laws of motion

    Can we consider the 6N force is applied to both the particles when considering them as one system eventhough they are not connected?
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    Center of mass and Newton's laws of motion

    U is initial velocity and is zero. Therefore I took the initial velocity of the center of mass as zero.
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    Center of mass and Newton's laws of motion

    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...
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    Comparing Coefficients of Thermal Expansion in Solid Rods

    okay.. Now I understand. Since Al has the higher alpha it should have the lower initial length. Thank you very much!
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    Comparing Coefficients of Thermal Expansion in Solid Rods

    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...
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    Very Basic Mechanics: Equal Masses on a Pulley

    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?
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    Very Basic Mechanics: Equal Masses on a Pulley

    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...
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    Undergrad Does 1 mole of all gas exert equal pressure

    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.
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    Rolling Motion of Ring, Disk, Sphere: tr<td<ts

    Thank you very much!