Enter the torque and the angular velocity into the calculator to calculator the HP of the rotating mass. This is also considered the rotational power.

## Rotating Mass Hp Formula

The following formula is used to calculate the horsepower output of a rotating mass.

P = t * w /746
• Where P is the power (Horsepower)
• t is the torque (N*m)
• w is the angular velocity (rad/s)

To calculate the hp of a rotating mass, multiply the torque by the angular velocity, then divide by 746.

## What is rotating mass hp?

Definition:

Rotating mass hp, or rotating mass horsepower, is a measure of the total power contained by a rotating mass. The standard units of power are Joules per second, but horsepower is also a common unit of power.

## How to calculate rotating mass hp?

Example Problem:

The following example outlines how to calculate the horsepower of a rotating mass.

First, determine the torque. In this example, the torque is measured to be 1000 N*m.

Next, determine the angular speed. The angular velocity is measured to be 25 rad/s.

Finally, calculate the horsepower using the formula above:

P = t * w /746

P = 1000*25 /746

P = 33.51 HP