(4a) A 5.49kg book is lying on a 0.367m high table. You pick it up and place it on a bookshelf 4.05m above the floor. a) How much work does gravity do on the book? Submit Answer | Tries 0/10 (4b) How much work does your hand do on the book assuming the book is lifted straight up at a constant velocity from the table to the bookshelf? Submit Answer Tries 0/10