How clutch works
Clutch Engage with Engine
The clutch is a device that transfers power from the engine to the gearbox, then to the wheels that drive the car.
The above animation shows the clutch disengaged (driver pressing clutch pedal down) thereby preventing any power from the engine being used to drive the car.
Clutch Engage With Engine and Gear Box
The above animation shows the clutch engaged (driver is not pressing the clutch down) thereby allowing power from the engine to drive the car, as it would be when driving along the road normally.
Clutch Engage with First Gear