5 Questions
What does torque measure?
Rotational force
How is horsepower different from torque?
Horsepower is only observed, while torque can be felt and observed.
Which statement best explains the relationship between horsepower and RPM?
Direct relationship: higher RPM means higher horsepower.
How does a truck engine typically differ from a sports car engine in terms of torque and RPM?
Truck engines have lower RPM and higher torque, while sports car engines have higher RPM and lower torque.
How does horsepower differ from linear force?
Horsepower measures the rate of work done over time, while linear force measures the amount of force exerted at once.
Study Notes
- Torque is a measure of rotational force, expressed in Newton meters or foot-pounds. It is the rotational equivalent of linear force, and can be felt and observed.
- Torque output of motors can be compared to internal combustion engines in vehicles, as both generate torque at the end of a shaft to drive the wheels.
- Horsepower is the rate at which work is done, measuring how often a force is applied over a period of time. It introduces the element of time into the equation.
- Unlike torque, horsepower is influenced by both the amount of force and how frequently that force is exerted over time.
- While torque can be felt and observed, horsepower can only be observed and not felt in the same physical sense.
- Horsepower is essentially torque multiplied by RPM, indicating how quickly the force is applied.
- The comparison between a truck engine (high torque, low RPM) and a sports car engine (high RPM, lower torque) illustrates the relationship between physical size, torque, and horsepower in engines.
Explore the fundamental concepts of torque and horsepower, their definitions, relationship, and relevance to engine performance. Learn how torque is a measure of rotational force, while horsepower is the rate at which work is done over time.
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