# Joint:getReactionTorque

Returns the reaction torque on the second body.

## Function

Available since LÖVE 0.8.0
This variant is not supported in earlier versions.

### Synopsis

    torque = Joint:getReactionTorque( invdt )

### Arguments

`number invdt`
  How long the force applies. Usually the inverse time step or 1/dt.

### Returns

`number torque`
  The reaction torque on the second body.

## Function

Removed in LÖVE 0.8.0
This variant is not supported in that and later versions.

### Synopsis

    torque = Joint:getReactionTorque( )

### Arguments

None.

### Returns

`number torque`
  The reaction torque on the second body.

## See Also

- Joint

##

Category:

- Functions