Mechanical Aptitude Levers, Pulleys, and Gears Questions and Answers

Question 1

A wheelbarrow is an example of which class of lever?

Accepted Answer

Second-Class Lever

Answer

First-Class Lever

Answer

Third-Class Lever

Answer

Fourth-Class Lever

Question 2

In a pulley system, if a 100 lb weight is supported by 4 rope segments, what is the ideal mechanical advantage?

Accepted Answer

4

Answer

2

Answer

8

Answer

1

Question 3

If a large gear with 60 teeth drives a small gear with 20 teeth, and the large gear makes one full rotation, how many rotations will the small gear make?

Accepted Answer

Three rotations

Answer

One-third of a rotation

Answer

One rotation

Answer

Six rotations

Question 4

Which of the following simple machines provides a mechanical advantage GREATER than 1 and changes the direction of the force?

Accepted Answer

A first-class lever with the fulcrum closer to the load

Answer

A single fixed pulley

Answer

A single movable pulley

Answer

A third-class lever

Question 5

A mechanic uses a 2-foot long wrench to loosen a bolt. If the mechanic applies effort at the very end of the wrench and the fulcrum is the center of the bolt, what class of lever is being used?

Accepted Answer

First-Class Lever

Answer

Second-Class Lever

Answer

Third-Class Lever

Answer

It is not a lever

Question 6

Two meshed gears are rotating. Gear A has 40 teeth and is rotating clockwise. Gear B has 20 teeth. What is the rotational direction and relative speed of Gear B?

Accepted Answer

Counter-clockwise, faster

Answer

Clockwise, faster

Answer

Counter-clockwise, slower

Answer

Clockwise, slower