FIGURE 8-9 -6 J of Work Is Needed to Push an Object

Multiple Choice

FIGURE 8-9
-6 J of work is needed to push an object of mass 2 kg from point A to point B of the frictionless inclined plane as shown in Fig. 8-9. If the angle of inclination is 30°, the height of the plane is h, what is the length of the inclined plane? Use g = 10 m/s².

A) 0.6 m
B) 0.3 m
C) 10 m
D) 6 m
E) 3 m