The problem involves calculating the work done by gravity on a book being moved from a table to a higher shelf. The subject area pertains to mechanics, specifically the concept of work and gravitational forces.
Some participants have identified potential errors in their approach, particularly regarding the signs in the work equation. There is an acknowledgment of the need to clarify the distinction between the work done by gravity and the work done by the person lifting the book. Multiple interpretations of the equation are being explored.
Participants note that the original equation may not apply as intended due to the context of the question, which specifically asks for the work done by gravity.
talaroue said:Homework Statement
A 1.7 kg book is lying on a 0.99-m-high table. You pick it up and place it on a bookshelf 2.43 m above the floor.
How much work does gravity do on the book
Homework Equations
Wmg=mgYi-mgYf
The Attempt at a Solution
I thought that is the correct equation so I simply just plugged and chugged but it came out wrong. What did I do wrong?