Physics

Problem

5\,\text{kg}

suitcase is first lifted from the floor to a table

1.2\,\text{m}

high and then further up to a luggage rack

2.0\,\text{m}

above the table. Take

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

. What is the total increase in gravitational potential energy of the suitcase relative to the floor after both lifts? a)

98\,\text{J}

160\,\text{J}

157\,\text{J}

314\,\text{J}