A 2.0 kg book is lying on a 0.75-m-high table. You pick it up and place it on a bookshelf $2.3 \mathrm{m}$ above the floor. During this process, a. How much work does gravity do on the book? b. How much work does your hand do on the book?
Added by Oscar B.
Step 1
The book was initially 0.75 m above the floor and was moved to a height of 2.3 m. So, the change in height is 2.3 m - 0.75 m = 1.55 m. a. The work done by gravity is given by the equation W = mgh, where m is the mass of the object, g is the acceleration due to Show more…
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