AFCT Mechanical Aptitude 3

Question 1

Two objects of equal weight are placed on a balance beam, each 3 feet from the fulcrum on opposite sides. What happens?

Accepted Answer

The beam stays balanced

Answer

Object A goes down

Answer

Object B goes down

Answer

The beam swings randomly

Question 2

What principle explains why a boat floats?

Accepted Answer

Archimedes' Principle

Answer

Pascal's Law

Answer

Bernoulli's Principle

Answer

Newton's First Law

Question 3

A pendulum is pulled to one side and released. At which point does it have the greatest kinetic energy?

Accepted Answer

At the lowest point (bottom of swing)

Answer

At the highest point

Answer

Halfway between highest and lowest

Answer

Equal kinetic energy throughout

Question 4

Water flows from a large pipe into a smaller pipe. What happens to the water's speed?

Accepted Answer

Speed increases

Answer

Speed decreases

Answer

Speed stays the same

Answer

Flow stops completely

Question 5

What is the primary advantage of a compound pulley system over a single pulley?

Accepted Answer

It multiplies the applied force

Answer

It eliminates the need for rope

Answer

It reduces the weight of the load

Answer

It eliminates friction entirely

Question 6

An object floating in water has exactly half its volume submerged. What is its density relative to water?

Accepted Answer

Half that of water

Answer

Twice that of water

Answer

Equal to water

Answer

Cannot be determined