How to do 187th question?
Considering the rope length
now deriving twice
Solving those equations we obtain
we leave the conclusions to the reader.
The question asks for each one is Incorrect...
As general statement:
Here's the formula for tension of two masses:
Number 2 is correct
Number 1 is also correct
Number 3 however refers to the MAGNITUDE of relative acceleration in comparison to the pulley, so we can add to our statement:
Number 3 is also correct
Number 4 is incorrect because:
going back to: