For M2 which is on the incline, we rotate the axes so the X direction is along the incline, and the Y direction is perpendicular to the incline. This is what we always do for objects on incline. So M2 is only moving in the x direction. Since there’s no friction in this problem, we don’t need to figure out the normal force, so we don’t need to do anything in the Y direction for M2.
i have watched most of your videos. i was wondering if you will be posting more physics stuff for undergraduate students. it would be an immense help. by the way, you are the best teacher ever.. its a community service you're doing here. you are awesome!!!!!! 😭😭❤❤
There is no applied force acting on the object. The block has an initial velocity up the incline (but no force in that direction). Another way to think about it - it took a force to get the object moving initially, but now it has a velocity, and that force is no longer acting on the object, so it is not part of the problem. A common mistake students make is to assume there has to be a force in the direction of motion. Just remember that velocity does not equal force!
these videos are gold, and deserve more recognition.
Thanks!
2:31 that helped me so much I've actually come back to rewatch it before my exam.
I’m glad it helped you out!
This is the best physics lesson ever, thank you for the simple and clear steps. Please keep going.
Thanks!
tanks professor
Why didn't you write anything for the m2 Y direction during "direction of motion" 11:56 ?
For M2 which is on the incline, we rotate the axes so the X direction is along the incline, and the Y direction is perpendicular to the incline. This is what we always do for objects on incline. So M2 is only moving in the x direction. Since there’s no friction in this problem, we don’t need to figure out the normal force, so we don’t need to do anything in the Y direction for M2.
i have watched most of your videos. i was wondering if you will be posting more physics stuff for undergraduate students. it would be an immense help. by the way, you are the best teacher ever.. its a community service you're doing here. you are awesome!!!!!! 😭😭❤❤
I do plan to make more videos! What content would you like to see?
@@smithjomiddlesexedu i was hoping classical mechanics. But any topic you want to upload would be fine.
i cant get that the ex 18:00. I thought we have Fa (the force that make this car climb that slope) in Fnetx. Pls help me.
There is no applied force acting on the object. The block has an initial velocity up the incline (but no force in that direction). Another way to think about it - it took a force to get the object moving initially, but now it has a velocity, and that force is no longer acting on the object, so it is not part of the problem. A common mistake students make is to assume there has to be a force in the direction of motion. Just remember that velocity does not equal force!
@@smithjomiddlesexedu i really appreciate your hard working. thank you from bottom of my heart.
You’re welcome!
Please? make video with kinematics.❤
I have! Please check my channel!
Physics are very simple to me with you please help me with kinematics I'm studying for exam please help me 😮
I've got kinematics videos! Check out my playlist for Physics 1: ua-cam.com/video/pk3zP3QaPYw/v-deo.html&pp=gAQBiAQB