What is the difference between horse power and torque?

Horsepower measures the rate at which work is done; it is the work done per unit of time. It is measured in horsepower (hp) or kilowatts (kW). One horsepower is equivalent to 550 foot-pounds per second or 746 watts.

Torque measures the amount of force that is applied to a rotating shaft; it is the force that causes the shaft to rotate. It is measured in foot-pounds (ft-lb) or Newton-meters (N-m). One foot-pound is equivalent to the force required to lift a one-pound weight one foot off the ground.

The relationship between horsepower and torque is:

```

Horsepower = (Torque × RPM) / 5252

```

where:

* Horsepower is measured in horsepower (hp)

* Torque is measured in foot-pounds (ft-lb)

* RPM is the rotational speed of the shaft in revolutions per minute (rpm)

So, if you know the torque and RPM of a shaft, you can calculate the horsepower.

Example:

A shaft is rotating at 1,000 rpm and has a torque of 100 ft-lb. What is the horsepower of the shaft?

```

Horsepower = (100 ft-lb × 1,000 rpm) / 5252

= 19.04 hp

```

So, the shaft is producing 19.04 horsepower.

In general, a high-horsepower engine is needed for tasks that require a lot of power to be produced quickly, such as accelerating a car. A high-torque engine is needed for tasks that require a lot of force to be applied over a long period of time, such as pulling a heavy load.