Question

Give an example each for the following kinds of machines:

• A machine that changes the direction of effort to a more convenient direction.
• A machine that results in a greater movement of the load for a smaller movement of the effort. $\left[1\text{mark}\right]$

Answer 1

• A machine that changes the direction of effort to a more convenient direction $-$ a single fixed pulley attached to the bar of a water-well. $\left[0.5\text{mark}\right]$


• A machine that results in a greater movement of the load for a smaller movement of the effort $-$ a kitchen-knife in which the blade moves by a longer distance than the handle. $\left[0.5\text{mark}\right]$