Cogwheel number 1 rotates counterclockwise as shown.
If the red cogwheel rotates in the direction of the arrow choose option 1; if it rotates in the opposite direction choose option 2; if the red cogwheel does not move at all choose option 3.
The diagram shows two fixed cogwheels which can only rotate around their own axis. A rack is inserted between the two cogwheels and is moved in the direction shown by the arrow. What are the directions of movement and velocities of the cogwheels?
The grey cogwheel labelled 1 is being turned at a constant speed in a counterclockwise direction as shown in the diagram. The red cogwheel has 16 teeth while the rest of the cogwheels have 12 teeth. Please choose the sentence which correctly describes the rotation of the red cogwheel in comparison to cogwheel 1.