FIGURE 7-4
-The force on an object as a function of position is shown in Fig. 7-4. Determine the amount of work done by this force on an object that moves from x = 2.0 m to x = 7.0 m.
A)29 J
B)32 J
C)24 J
D)38 J
E)33 J

Question

FIGURE 7-4 
-The force on an object as a function of position is shown in Fig. 7-4. Determine the amount of work done by this force on an object that moves from x = 2.0 m to x = 7.0 m.
A)29 J 
B)32 J 
C)24 J 
D)38 J 
E)33 J

Quizplus · Accepted Answer

The work done by a force is equal to the area under the force-displacement curve. In this case, the force-displacement curve is a triangle, so the area under the curve is equal to 1/2 * base * height = 1/2 * (7.0 m - 2.0 m) * 29 N = 29 J.

FIGURE 7-4 -The Force on an Object as a Function of Position