Incline Plane Problems with Friction

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Physics Ninja looks at several inclined plane problems with friction.
In the first two problems, the block move at a constant speed. In the third problem, the block starts at rest and remain at rest, and in the fourth problem, the block are accelerating.

My first video on pulleys with NO friction can be found here.
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I like the problems you used every time. Please keep updating often. It's been my habit to watch them almost every morning. Thank you very much!

juniorcyans
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Nice explanation I've been watching alot of tutorials but a lot they like simple question but sir u are the best

JimmyTyson-fmzg
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I like how you explain each concept clearly! Keep updating!

CliffordBacsarza
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Very clear way of explaining, Thanks.

oscarww
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Teacher of the warld I like that keep it up dear👍

olivierniyonzima
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For problem A, is there a reason you didn’t solve for the component vectors in the Y-direction? It seems you only did the X-direction for M1

ashcash
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23:50 there is something wrong here, the acceleration is negative because block m2 has a greater mass than m1. So the acceleration of the system should act downward .consequently, it should be m2g - T = (-)m2a rather . Thanks for this amazing explanation!

HashemAljifri
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Why do you add a small line to the acceleration vector? What does it signify?

samarthkulkarni
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What if the system has nonconstant acceleration? How would I find the value for m2 then? Thanks!

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