Cam and Follower Toy

In the picture

1. 1Crank handle: the part you turn with your hand to spin the axle
2. 2Egg-shaped cam: turns with the axle and pushes the rod to different heights
3. 3Follower rod: rides on the cam edge and moves up and down
4. 4Painted bird on the rod top: rises when the cam’s high side lifts the rod

Examples

• The camshaft in a car engine opening and closing the valves
• The needle of a sewing machine going up and down

Quiz: Cam and Follower Toy (Age 10)

1. 1

   What kind of motion change does a cam make?

   • It changes turning motion into sideways sliding motion.
   • It changes turning motion into straight up-and-down motion.
   • It changes straight up-and-down motion into turning motion.
2. 2

   What decides how far and how fast the follower rod moves?

   • How long the follower rod is.
   • The shape of the cam.
   • How hard you turn the crank handle.
3. 3

   Which part rides on the cam edge and moves up and down?

   • The crank handle.
   • The egg-shaped cam.
   • The follower rod.

The answers, each with its explanation, are in the app. This quiz is free there while the lesson is in the free week.