ASVAB Mechanical Comprehension Practice Test 450436

Question 2 of 5
Inclined Plane

An inclined plane is a simple machine that reduces the force needed to raise an object to a certain height. Work equals force x distance and, by increasing the distance that the object travels, an inclined plane reduces the force necessary to raise it to a particular height. In this case, the mechanical advantage is to make the task easier. An example of an inclined plane is a ramp.

A 420 lb. barrel is rolled up a 20 ft. ramp to a platform that's 2 ft. tall. What effort is required to move the barrel?
44 lbs.
37.8 lbs.
42 lbs.
63 lbs.