Is there only lambda or rho type of density and not sigma type used in physics c? Will there be questions about semicircular shapes? or is it only just about rods? I am interested in what topics of center of mass does the exam involve. Thank you a lot for the video!
Great question! The AP Physics C: Mechanics test will not ask you to find the center of mass for semicircular shapes using integral calculus so sigma is not used. The AP Physics C: Electricity & Magnetism, however, does ask you to find charge distributions for semicircular shapes which does use sigma. Hope this helps!
@@HowToPhysics now i am trying to figure out how would these kinds of problems be solved if rho is not constant. Is this possible for rho to change as a function of volume and we can still get the answers? Or there are only questions about rho when it has a constant value
@@boboganbobogan9297 on the AP test you will not be asked to use rho (3D Density) to find center of mass. However, you will be asked to use to rho for moments of inertia. This video might help you? If not, my apologies! ua-cam.com/video/jdjH2W3jOvQ/v-deo.html
This video is criminally underrated. Man is out here singlehandedly saving my grade
Glad to help!
I just wanna say thank you so much. You have no idea how helpful this video was. This 15 min video taught me more than my two hour class did.
Happy to help!
Is there only lambda or rho type of density and not sigma type used in physics c? Will there be questions about semicircular shapes? or is it only just about rods? I am interested in what topics of center of mass does the exam involve. Thank you a lot for the video!
Great question! The AP Physics C: Mechanics test will not ask you to find the center of mass for semicircular shapes using integral calculus so sigma is not used. The AP Physics C: Electricity & Magnetism, however, does ask you to find charge distributions for semicircular shapes which does use sigma. Hope this helps!
@@HowToPhysics thank you ❤️
@@HowToPhysics now i am trying to figure out how would these kinds of problems be solved if rho is not constant. Is this possible for rho to change as a function of volume and we can still get the answers? Or there are only questions about rho when it has a constant value
@@boboganbobogan9297 on the AP test you will not be asked to use rho (3D Density) to find center of mass. However, you will be asked to use to rho for moments of inertia. This video might help you? If not, my apologies! ua-cam.com/video/jdjH2W3jOvQ/v-deo.html
@@HowToPhysics Thanks a lot for your answer. I get it.
thank you!!!
No worries!