m = 1.7 kg
g = 9.8 m/s2
Δh = hf - hi = 2.3 m - 0.80 m = 1.5 m
A 1.7 kg book is lying on a 0.80 m -high table. You pick it up and place it on a bookshelf 2.3 m above the floor.
A) During this process, how much work does gravity do on the book?
B) During this process, how much work does your hand do on the book?
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