The diagram below shows the design of a toy.
Re-design the toy such that when the wheel rotates, the body will move concurrently in an oscillating motion.
(a) Suggest a mechanism that would result in the above motion.
(b) Sketch out how the suggested mechanisms are being applied to the design of the toy. Label your sketches.
The figure below shows a folding stand for an electronic keyboard.
Show how levers and linkages can be used to lock the frame into the open position.