Explanation:

Hartnell governor is a type of centrifugal governor used to control the speed of an engine or machine. It consists of two masses attached to a spindle, which is driven by the engine or machine. The masses are connected to each other by a spring, which acts as a restoring force. As the speed of the engine or machine increases, the centrifugal force acting on the masses also increases, causing them to move outwards. This movement is opposed by the spring, which tries to bring the masses back to their original position.

The sensitivity of the governor refers to its ability to respond to changes in speed. A more sensitive governor will respond quickly to changes in speed, while a less sensitive governor will respond slowly. The sensitivity of the Hartnell governor is determined by the stiffness of the spring used in the governor.

If a more stiff spring is used in the Hartnell governor, then the governor will be less sensitive. This is because a stiffer spring will require a greater force to stretch it, and therefore the masses will have to move outwards further before the spring begins to exert a significant force on them. This means that the governor will respond more slowly to changes in speed, and will be less able to maintain a constant speed.

On the other hand, if a less stiff spring is used in the Hartnell governor, then the governor will be more sensitive. This is because a less stiff spring will require less force to stretch it, and therefore the masses will begin to be affected by the spring at a lower speed. This means that the governor will respond more quickly to changes in speed, and will be better able to maintain a constant speed.

Conclusion:

In conclusion, the sensitivity of the Hartnell governor is determined by the stiffness of the spring used in the governor. A more stiff spring will make the governor less sensitive, while a less stiff spring will make the governor more sensitive.

Cause this governor is weight loaded in Spring