Enter the flywheel mass (kg), the radius (m), and the angular acceleration (rad/s^2) into the calculator to determine the Flywheel Torque.

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## Flywheel Torque Formula

The following formula is used to calculate the Flywheel Torque.

Tfw = m*r^2/2/a

- Where Tfw is the Flywheel Torque (N-m)
- m is the flywheel mass (kg)
- r is the radius (m)
- a is the angular acceleration (rad/s^2)

To calculate flywheel torque, multiply the flywheel mass by the radius squared, then divide by 2 times the angular acceleration.

## How to Calculate Flywheel Torque?

The following example problems outline how to calculate the Flywheel Torque.

**Example Problem #1**

- First, determine the flywheel mass (kg). In this example, the flywheel mass (kg) is given as 20 .
- Next, determine the radius (m). For this problem, the radius (m) is given as 5 .
- Next, determine the angular acceleration (rad/s^2). In this case, the angular acceleration (rad/s^2) is found to be 6.
- Finally, calculate the Flywheel Torque using the formula above:

Tfw = m*r^2/2/a

Inserting the values from above and solving yields:

Tfw = 20*5^2/2/6 = 41.666 (N-m)

**Example Problem #2**

Using the same method as above, determine the variables required by the equation. For this example problem, these are provided as:

flywheel mass (kg) = 15

radius (m) = 10

angular acceleration (rad/s^2) = 7

Enter these given values yields:

Tfw = 15*10^2/2/7 = 107.14** **(N-m)