A 2kg textbook rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.15m, to a hanging book with mass 3kg. The system is released from rest, and the books are observed to move 1.2m in 0.8s.
My solution so far:
using constant acceleration formula
For the hanging part:
(rounded) This agrees with my textbook
however for the horizontal tension in the cord
I make it
however the answer in my textbook is 7.5 which would suggest
where has the force gone?
Have I missed out a force
Also how can you have different tensions in the cord surely it would snap?