It'll be a long one, but I'll try to make it as short as possible.
First, I should give a brief introduction to the education system in the country I come from.
Perhaps you've heard of the Bologna process in Europe; well, officially, we've accepted the system, but there are some differences...
(I assume that the plane is supposed to be motionless?)
Try drawing a picture of the problem: draw the inclined plane, the two masses on it, and then, add all the relevant forces (in projection form). Then write the equations for Newton's second law for the bodies - in projection form.
If you...
The tempo isn't crucial to the process of obtaining this kind of knowledge.
Just make sure you actually, really, totally understand what you're studying. I cannot emphasize how important it is to understand every detail of the material you are learning about.
If you aren't sure about even the...
As the question is what weight will the dynamometer show, the answer will be expressed in Newtons.
My opinion here is that there's no need to fuss over the dynamometer whilst searching for the solution of the problem; the problem itself could have been stated in a simpler manner, e. g. "If the...