A string is tied to a book and pulled at an angle shown in the diagram. The book remains in contact with the table and does not move. Which choice best describes the free body diagram in the vertical direction for this situation?
Answer choices 1-5

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy