- #1
uradnky
- 30
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Homework Statement
While working through problems I always have trouble determining the direction that tension acts in on objects in the system.
In system B.) block A has a velocity of 4m/s to the right, with mu(k)=0.2, causing the mass B to fall, in class tension was assumed to be in the direction of A's motion.
But in A.) the system starts at rest, and A slides down the frictionless inclined plane moving masses B and C. In this case the tension opposes the motion of A, I just can't visualize this.
Is there some rule of thumb for this that I'm just not realising?
If someone could give me a brief explanation on how tension acts on each object in these systems I would appreciate it.