The concept of horsepower is named after the steam engine's improver, James Watt, to indicate the power of his steam engine relative to the horse's pulling force. It is defined as "a horse that can pull 33,000 pounds and walk at 1 foot per minute." Power" and use watts (W) or kilowatts (kW) as standard units.
Some countries, such as the United Kingdom and the United States, use British horsepower. 1-inch horsepower is equal to 550 feet lbs/sec, which is equal to 745.7 watts.  In the late 18th century, British physicist Watt (1736–1819) defined the horsepower definition as a measure of the power of a newly-built steam engine by raising the weight of 1,000 pounds by 33 feet in one minute. Gong, this is the British horsepower, expressed in the letter HP.
More vividly speaking, if a person weighs 10 kilograms and runs 100 meters in 13.3 seconds, you will have 1 horsepower. But, of course, an instant burst, such as a basket of baskets, can reach 2 horsepower. The air conditioners that are common in life are also horsepower. One air conditioner can support one bedroom, while the microwave and electric kettle can reach 2 horsepower.
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