Physics

Problem

2.0\,\text{kg}

book is placed on a shelf

1.5\,\text{m}

above the floor. Student A chooses the floor as the zero of potential energy and obtains

29.4\,\text{J}

. Student B chooses the top of a table

0.70\,\text{m}

high as the zero level. What potential energy will Student B calculate for the same book on the shelf? (

g = 9.8\,\text{m/s}^2

) a)

29.4\,\text{J}

15.7\,\text{J}

-15.7\,\text{J}

13.7\,\text{J}