Which of the following are the correct units for mass? Choose all that apply.
dyn
tons
m/s2
u
slugs
kg
oz
g
The fundamental unit of mass is the kilogram
(1/1000) kg is a gram, g , also mass
1000 kg is a METRIC ton (not a 2000 pound USA ton which is weight not mass)
A slug is the unit of mass in the USA, feet, seconds, pounds system.
weight in pounds = mass in slugs * 32.2 ft/s^2. It has not been used in physics since I was an undergraduate in the 1950s.
To determine the correct units for mass, we need to understand the different systems of measurement commonly used.
1. dyn: Dyn is not a unit of mass. It is a unit of force in the centimeter-gram-second (CGS) system.
2. tons: Ton is a unit of mass commonly used in the Imperial and U.S. customary systems. It is equal to 2000 pounds (lbs) or approximately 907.185 kilograms (kg). Therefore, tons can be considered a correct unit for mass.
3. m/s2: This unit represents acceleration, specifically meters per second squared (m/s^2). It is not a unit of mass.
4. u: The symbol "u" is used to represent the unified atomic mass unit (u). It is a unit commonly used in the field of atomic and molecular physics to express atomic and molecular masses. Therefore, u can be considered a correct unit for mass.
5. slugs: Slug is a unit of mass used in the British engineering system and the U.S. customary system. It is derived from the force-to-mass ratio needed to accelerate an object at 1 foot per second squared (ft/s^2). Therefore, slugs can be considered a correct unit for mass.
6. kg: Kilogram (kg) is the SI unit of mass. It is widely used in the metric system and is the base unit for mass. Therefore, kg can be considered a correct unit for mass.
7. oz: Ounce (oz) is a unit of weight commonly used in the Imperial and U.S. customary systems. It is equal to 1/16th of a pound (lbs) or approximately 28.35 grams (g). Therefore, oz can be considered a correct unit for mass.
8. g: Gram (g) is a unit of mass commonly used in the metric system, specifically the SI system. It is equal to 0.001 kilograms (kg). Therefore, g can be considered a correct unit for mass.
Based on the explanations above, the correct units for mass are tons, u, slugs, kg, oz, and g.