What type of energy is converted when gasoline burns in an engine

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.