Pendulum :
The ball moves to and fro. It rises to extreme positions on both sides and reverses its motion
Oscillations gradually die down
spring & weight:
A spring can be elongated by a force applied at one end in the direction of its long axis, the other end is being fixed
The increase in the length is directly proportional to the magnitude of force
Heat Spiral
Heating air causes the air molecules to travel farther apart, thereby making the air less dense. Less dense air will always rise above dense air. As the warm, lighter, air rises upwards the paper spiral begins to spin.