Physics

Problem

A body is moved along the

x

-axis from

x=0

x=4\,\text{m}

under a force that is

F(x)=3x\,\text{N}

for

0\le x\le 2\,\text{m}

and

F(x)=6\,\text{N}

for

2< x\le 4\,\text{m}

. Determine the total work done by the force during the motion. a)

24\,\text{J}

6\,\text{J}

18\,\text{J}

12\,\text{J}