Question

A front end loader applied 150 N of force to lift a stone and 1250 joules of work was done. How high was the rock lifted?

• A. 9.3 m
• B. 10.3 m
• C. 8.3 m
• D. 5.3 m

Answer 1

The correct option is C

8.3 m

Work done = Force $\times$ displacement

Force = 150 N

Work done = 1250 N-m

1250 = 150 $\times$ displacement

$\text{Displacement}=\frac{1250}{150}=\text{8.33 m}$

Thus, the rock was lifted through a distance of 8.33 meters.