What is the Horse-Power Developed by an Engine in 30 Seconds?

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In summary, Horse-Power Developed (HPD) is a unit of measurement used to indicate the work capacity of an engine or machine in a given time frame. It is calculated by multiplying torque and rotational speed and dividing by 5252. HPD differs from Horse-Power in that it takes into account efficiency and losses, while Horse-Power is a theoretical measurement. Understanding HPD is important in comparing the power and efficiency of different engines and machines, and it can be affected by factors such as engine design, fuel type, and maintenance.
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NumberTheory
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Homework Statement



A motor car of mass 2 tons moves from rest with constant acceleration and acquires a velocity of 30 miles/hr in 30 seconds . Show that the horse-power developed by the engine during that time is 16.43 .

Homework Equations



Power = Work-done/Time taken

The Attempt at a Solution



I just can't get the answer to match . I keep getting values much larger than 16.43 !
 
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Show us your calculations, and we can help you.
 

FAQ: What is the Horse-Power Developed by an Engine in 30 Seconds?

What is "Horse-Power Developed"?

Horse-Power Developed (HPD) is a unit of measurement that indicates the amount of work a machine or engine can perform in a certain amount of time. It is used to measure the power and efficiency of engines, particularly in vehicles.

How is Horse-Power Developed calculated?

Horse-Power Developed is calculated by multiplying the torque (force applied to rotate an object) by the rotational speed (RPM) and dividing by 5252. The formula is: HPD = (Torque x RPM) / 5252.

What is the difference between Horse-Power Developed and Horse-Power?

Horse-Power Developed refers to the actual power that an engine or machine is producing, while Horse-Power is a unit of measurement used to describe the power of engines and other mechanical devices. Horse-Power Developed takes into account factors such as efficiency and losses, while Horse-Power is more of a theoretical measurement.

Why is Horse-Power Developed important?

Horse-Power Developed is important because it helps us understand the capabilities of different engines and machines. It also allows us to compare the power and efficiency of different models and make informed decisions when it comes to choosing the right equipment for our needs.

What factors can affect Horse-Power Developed?

Horse-Power Developed can be affected by a variety of factors, including engine design, fuel type and quality, air intake, exhaust system, and operating conditions. Proper maintenance and tuning can also impact the Horse-Power Developed of an engine.

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