Could I just say that your videos are wonderful. Every time I want an explanation for something I learned, physics ninja is around. Thank you :)
@PhysicsNinja
3 жыл бұрын
Thank you so much!
@michaellam7391
9 ай бұрын
Did anyone watch because they were told to watch on remote learning?
@jeremiechopty890
Жыл бұрын
Okay, but i dont understand why the perpendicular force of the friction is sin and not cos. The force of friction is on the end of the ladder, which does not make sense to why you drew it just above. It seems you could draw all the forces on the ladder with sin being the perpendicular. (it seems your just shifting the components around)
@fra2025
2 ай бұрын
Hi, in your udemy course you found theta max, but maybe you meant theta min... Right? Thanks! 😊
@rajeshmondal7134
5 жыл бұрын
Plz make a video on this following problem. A cannon of mass M rests on a horizontal plane having coefficient of friction k. It fires a projectile of mass m with muzzle velocity v in a direction making angle "a" with the horizontal. Determine how far back the cannon will move due to the recoil. Thanks,
@PhysicsNinja
5 жыл бұрын
nice problem! I"ll try to put something together soon. I'll add it to my queue.
@imranradzmi9944
2 жыл бұрын
You could use conservation of momentum to find the backward horizontal momentum the cannon gets upon firing (using trigonometry). Then, as kinetic energy = P^2/2m, equate this kinetic energy with frictional energy loss to find distance travelled since you know the reaction force that the ground exerts on the cannon.
@Behindthefightofficial
4 жыл бұрын
Hi! Why does the painter not have a reaction force perpendicular to the ladder?
@PhysicsNinja
4 жыл бұрын
There is a force on the painter but I’m not interested in the painter. I’m looking at all the forces on the ladder. There are only 2 forces on the painter, the weight of the painter and the normal force from the step on the painter. Both forces are in the y-direction. The force from the ladder is not perpendicular to the ladder. If this was the cases the painter would not be in equilibrium.
@donboser9673
2 жыл бұрын
My apologies as was viewing the torque from the bottom of the ladder.
@harchan6274
2 жыл бұрын
Thanks a lot sir, this video was really helpful
@sampasarkar6883
4 жыл бұрын
You are a genius sir. Your video is so much cool than any other video I watched before. Make many video with problem.
@lidiyamesenbet5856
2 жыл бұрын
Tank u so much sir keep it up am from africa
@PhysicsNinja
2 жыл бұрын
Thank you!
@fftyhhTt6yhhgg
Жыл бұрын
Can this example be extended for motorcycle lean angle?
@PhysicsNinja
Жыл бұрын
Yes, similar type of problem
@lucaberti5144
Жыл бұрын
Thanks. Helped me a lot with a similar problem.
@PhysicsNinja
Жыл бұрын
Glad it helped
@athenaaminimd
7 ай бұрын
Interesting🎉🎉🎉😮😮
@junkaccount2535
4 жыл бұрын
what would you do if the full ladder length was given? I've got the same problem except I have to solve for the coefficient of static friction between the ladder and the ground.
@JamesChipango
2 ай бұрын
Awesome application 😊
@مصیوف
Жыл бұрын
Hello , Could you please help me and say where I can find these questions or similar questions of physics? Please tell me a website or book or source! Everything that You tink can help me... Thanks!❤️
@lkcrocks6645
Жыл бұрын
My physics class uses Texas EDU online for problems. You can also find IB physics practice test pdfs online
@mujahid4764
3 жыл бұрын
N and fs forces must be zero because it is actting on the hang.
@blj9793
10 ай бұрын
Amazing!
@ranitbanerjee956
2 жыл бұрын
my question is which force is responsible for slipping off the rod as there is no force acting left side of the bottom of the rod also there is no component of gravitational force acting. So, which force moves the bottom-most point towards the left for slipping.
@semaj1000
2 жыл бұрын
Thanks so much!!
@donboser9673
2 жыл бұрын
You have really screwed up my mind with your assignment of the direction of torques as it is counter intuitive
why is the normal force not pointing normal to the edge that is at the floor? i thought that in that case, it should be pointing normal to the ladder, instead of the floor
@PhysicsNinja
2 жыл бұрын
The normal force is produced by the floor and acting on the ladder. The normal force is always perpendicular to the surface that is producing the force.
@himadridas8221
3 жыл бұрын
Why didn't u calculate the torque from the lower end of the ladder that would have been much easier
@yubinxing9009
2 жыл бұрын
yes, but the method is the same.
@likicatzj
Жыл бұрын
Thank you for the video ! I don't understand why the painter wouldn't have a normal force tho, can someone explain?
@PhysicsNinja
Жыл бұрын
There is definitely a force on the painter, but in this problem we are looking at the forces on the ladder, not the painter.
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