Question 1

What is a slug?

Accepted Answer

A slug is a unit of mass = 14.59 kg. Defined so 1 pound-force accelerates 1 slug at 1 ft/s². Used in physics.

Question 2

Where are slugs used?

Accepted Answer

Engineering calculations in imperial units. Rarely used outside physics. 1 slug = mass that weighs 32.2 pounds on Earth.

Question 3

Is there a difference between mass and weight?

Accepted Answer

Yes! Mass (kg) is amount of matter, constant everywhere. Weight (newtons or pounds-force) is gravitational force on mass, varies by location.

Question 4

Why do jewelry and precious metals use different units?

Accepted Answer

Troy system (troy ounces, pennyweights) has been used for precious metals since the Middle Ages. 1 troy oz = 31.1g vs 1 regular oz = 28.35g.

Slugs to Kilograms Weight Converter - Free Online Tool

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