Differences

This shows you the differences between two versions of the page.

 phy131studiof15:lectures:chapter10 [2015/09/24 21:00]mdawber [Center of mass] phy131studiof15:lectures:chapter10 [2015/09/28 09:10] (current)mdawber [A thin uniform plate] Both sides previous revision Previous revision 2015/09/28 09:10 mdawber [A thin uniform plate] 2015/09/24 21:10 mdawber [Rockets] 2015/09/24 21:00 mdawber [Center of mass] 2015/09/24 20:57 mdawber [10.P.005] 2015/09/24 20:55 mdawber [Momentum] 2015/07/22 09:37 mdawber [Momentum] 2015/07/22 09:33 mdawber created Next revision Previous revision 2015/09/28 09:10 mdawber [A thin uniform plate] 2015/09/24 21:10 mdawber [Rockets] 2015/09/24 21:00 mdawber [Center of mass] 2015/09/24 20:57 mdawber [10.P.005] 2015/09/24 20:55 mdawber [Momentum] 2015/07/22 09:37 mdawber [Momentum] 2015/07/22 09:33 mdawber created Line 124: Line 124: $\vec{x}_{CM}=\frac{1}{M}\int x\,​dm=\frac{1}{M}\int_{0}^{l}\int_{0}^{w}\rho_{A}x\,​dy\,​dx=\frac{1}{M}\frac{1}{2}\rho_{A}l^{2}w=\frac{l}{2}\hat{i}$ $\vec{x}_{CM}=\frac{1}{M}\int x\,​dm=\frac{1}{M}\int_{0}^{l}\int_{0}^{w}\rho_{A}x\,​dy\,​dx=\frac{1}{M}\frac{1}{2}\rho_{A}l^{2}w=\frac{l}{2}\hat{i}$ - $\vec{y}_{CM}=\frac{1}{M}\int y\,​dm=\frac{1}{M}\int_{0}^{l}\int_{0}^{w}\rho_{A}y\,​dy\,​dx=\frac{1}{M}\frac{w}{2}\rho_{A}l^{2}l=\frac{w}{2}\hat{j}$ + $\vec{y}_{CM}=\frac{1}{M}\int y\,​dm=\frac{1}{M}\int_{0}^{l}\int_{0}^{w}\rho_{A}y\,​dy\,​dx=\frac{1}{M}\frac{1}{2}\rho_{A}w^{2}l=\frac{w}{2}\hat{j}$ Line 235: Line 235: The key to rocket propulsion is that the momentum of the expelled gas is equal and opposite to the forward momentum of the rocket. This does not rely on any interaction with the external atmosphere. The key to rocket propulsion is that the momentum of the expelled gas is equal and opposite to the forward momentum of the rocket. This does not rely on any interaction with the external atmosphere. + + ===== 10.P.049 ===== + + ===== 10.P.045 ===== + +
phy131studiof15/lectures/chapter10.1443142838.txt ยท Last modified: 2015/09/24 21:00 by mdawber