It's very interesting to learn the gear rotations. When one gear is grid-locked to move another gear than second gear rotates in the opposite direction of first gear. It becomes very interesting to find in which the direction some other gear will move when another one in the gridlock full of gears moves in a particular direction.In this post I am posting 5 Gear based puzzles. In each of these puzzles one has to find out in which direction Gear B will move when Gear A moves in either clockwise or anti-clockwise. Answers of each or these puzzles is given at the end along with videos of rotation of these gears to learn and understand these motions better.