Kilogram Converter
Convert Kilogram to Pound Force Square Second Foot and more • 73 conversions
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Unit Explanations
Kilogramkg
Source UnitThe kilogram, abbreviated as kg, is the SI unit of mass and is defined as being equal to the mass of the International Prototype of the Kilogram, which is a platinum-iridium cylinder kept at the International Bureau of Weights and Measures (BIPM) in Sèvres, France. This definition was established in 1889 and was the only base unit defined by a physical object. However, in 2019, the definition of the kilogram was redefined in terms of fundamental constants, specifically the Planck constant (h), which is set at exactly 6.62607015 × 10^-34 joule seconds. This redefinition allows for more precise measurements and ensures that the kilogram remains consistent and reproducible over time.
Current Use
Today, the kilogram is widely used across the globe as the standard unit of mass in scientific, commercial, and everyday contexts. It is employed in various industries including manufacturing, agriculture, and healthcare. For instance, in the food industry, products are often sold by mass, measured in kilograms. In healthcare, medication dosages may also be prescribed based on the patient’s weight in kilograms. While most countries use the kilogram as part of the metric system, some countries, such as the United States, still use imperial units for certain applications, though the metric system is increasingly adopted in scientific and technical fields. The versatility of the kilogram makes it a vital unit in international trade and commerce.
Fun Fact
The kilogram was the first unit of measurement to be defined by a physical artifact.
Pound Force Square Second Footlbf·s²/ft
Target UnitThe pound force square second foot (lbf·s²/ft) is a derived unit of acceleration in the imperial system, representing the force applied over a given area per square second in terms of feet. This unit arises from the need to express acceleration in terms of force and distance, where 1 pound-force is the force required to accelerate a mass of 1 pound at a rate of 1 foot per second squared. In practical applications, this unit is often used in engineering and physics to describe dynamic systems and material properties.
Current Use
The pound force square second foot is commonly used in engineering disciplines, particularly in the United States, for calculating forces, accelerations, and dynamic load conditions. It is particularly relevant in scenarios involving the design of structures, machinery, and vehicles, where forces acting on materials must be accurately quantified. Despite the global shift towards metric units, this unit remains standard in industries reliant on imperial measurements, showcasing its ongoing relevance.
Fun Fact
The pound force is unique to the imperial system, contrasting with the more widely used Newton in the metric system.
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= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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Kilogram
force • SI Unit
Definition
The kilogram, abbreviated as kg, is the SI unit of mass and is defined as being equal to the mass of the International Prototype of the Kilogram, which is a platinum-iridium cylinder kept at the International Bureau of Weights and Measures (BIPM) in Sèvres, France. This definition was established in 1889 and was the only base unit defined by a physical object. However, in 2019, the definition of the kilogram was redefined in terms of fundamental constants, specifically the Planck constant (h), which is set at exactly 6.62607015 × 10^-34 joule seconds. This redefinition allows for more precise measurements and ensures that the kilogram remains consistent and reproducible over time.
History & Origin
The kilogram originated in the late 18th century during the period of the French Revolution, as part of the efforts to standardize measurements across France and eventually the world. The need for a uniform measurement system became apparent in the wake of the Revolution, as varying local measures were causing confusion and inefficiency in trade and governance. Thus, the metric system was born, with the kilogram being one of its foundational units. The first kilogram was defined as the mass of one liter of water at its maximum density, which is approximately equal to 1,000 cubic centimeters. This practical approach to defining mass allowed for easier adoption across various sectors.
Etymology: The term 'kilogram' is derived from the Greek word 'kilo', meaning 'a thousand', and the French word 'gramme', which itself comes from the Late Latin 'gramma', meaning 'small weight'.
Current Use
Today, the kilogram is widely used across the globe as the standard unit of mass in scientific, commercial, and everyday contexts. It is employed in various industries including manufacturing, agriculture, and healthcare. For instance, in the food industry, products are often sold by mass, measured in kilograms. In healthcare, medication dosages may also be prescribed based on the patient’s weight in kilograms. While most countries use the kilogram as part of the metric system, some countries, such as the United States, still use imperial units for certain applications, though the metric system is increasingly adopted in scientific and technical fields. The versatility of the kilogram makes it a vital unit in international trade and commerce.
💡 Fun Facts
- •The kilogram was the first unit of measurement to be defined by a physical artifact.
- •The International Prototype of the Kilogram lost mass over time, leading to the redefinition in 2019.
- •The kilogram is the only SI base unit with a prefix ('kilo') included in its name.
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Pound Force Square Second Foot
weight • Non-SI
Definition
The pound force square second foot (lbf·s²/ft) is a derived unit of acceleration in the imperial system, representing the force applied over a given area per square second in terms of feet. This unit arises from the need to express acceleration in terms of force and distance, where 1 pound-force is the force required to accelerate a mass of 1 pound at a rate of 1 foot per second squared. In practical applications, this unit is often used in engineering and physics to describe dynamic systems and material properties.
History & Origin
The origins of the pound force can be traced back to the early development of the imperial system in England, where the pound was established as a unit of mass. The concept of force was later formalized in the 18th century with Isaac Newton's second law of motion, relating mass and acceleration. The combination of pounds as a unit of mass and feet as a unit of distance led to the formulation of various derived units, including the pound force square second foot.
Etymology: The term 'pound' derives from the Latin 'libra', which means balance or scales, while 'force' stems from the Latin 'fortis', meaning strong. The use of 'foot' is straightforward, referring to the human foot and its historical use as a unit of length.
Current Use
The pound force square second foot is commonly used in engineering disciplines, particularly in the United States, for calculating forces, accelerations, and dynamic load conditions. It is particularly relevant in scenarios involving the design of structures, machinery, and vehicles, where forces acting on materials must be accurately quantified. Despite the global shift towards metric units, this unit remains standard in industries reliant on imperial measurements, showcasing its ongoing relevance.
💡 Fun Facts
- •The pound force is unique to the imperial system, contrasting with the more widely used Newton in the metric system.
- •Isaac Newton's laws of motion directly influenced the formulation of various units of force and acceleration.
- •The pound force is often used in the aerospace industry to calculate thrust and drag forces on aircraft.
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Frequently Asked Questions
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