ASVAB
Mechanical Comprehension
Practice Test
846541
Question
3
of
5
Mechanical Advantage
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Such a device utilizes input force and trades off forces against movement to amplify and/or change its direction.
20 lbs. of effort is used by a machine to lift a 80 lbs. box. What is the mechanical advantage of the machine?