Maths Mechanics A LevelWatch
The pulley has mass 0.5kg, and is held in a fixed position by a light vertical chain. Calculate the tension in the chain...immediately after A strikes the floor.
(Tension in the string before is 5.88N and i worked out the masses of A and B)
However in the mark scheme they don't include the masses of A and B working this out, but include the tension in the string:
Why is this?