ASVAB Mechanical Comprehension Principles 1

Question 1

A lever has a fulcrum in the center. If you push down on one end, what happens to the other end?

Accepted Answer

It goes up

Answer

It stays in place

Answer

It also goes down

Answer

It moves sideways

Question 2

What is the mechanical advantage of a pulley system with 4 supporting ropes?

Accepted Answer

4

Answer

2

Answer

8

Answer

1

Question 3

Which simple machine is a ramp an example of?

Accepted Answer

Inclined plane

Answer

Lever

Answer

Wheel and axle

Answer

Screw

Question 4

What is friction?

Accepted Answer

A force that opposes motion between surfaces in contact

Answer

A force that causes objects to accelerate

Answer

The energy stored in a compressed spring

Answer

The tendency of objects to fall due to gravity

Question 5

If a gear with 20 teeth meshes with a gear with 40 teeth, and the smaller gear turns at 100 RPM, how fast does the larger gear turn?

Accepted Answer

50 RPM

Answer

100 RPM

Answer

200 RPM

Answer

25 RPM

Question 6

What does Newton's First Law of Motion state?

Accepted Answer

An object at rest stays at rest unless acted on by an external force

Answer

Force equals mass times acceleration

Answer

Every action has an equal and opposite reaction

Answer

Energy cannot be created or destroyed