What is an inclined plane? What is its mechanical advantage? Give two examples where it is used.

Given below is a crossword puzzle based on this lesson. Read the clues across and clues downwards and fill up the blank squares.

Across:

1. It makes work easier …………… .
2. A …………… is a simple machine which is used for raising a load up by applying the effort downwards.
3. Work is said to be done when a …………… applied on a body moves it.

Down:

2. …………… force at the fulcrum reduces the mechanical advantage.
3. A …………… and axle is also a simple machine.
4. Screw driver is an example of wheel and …………… .
5. …………… is a rod which can turn about a fixed point (fulcrum)

The mechanical advantage of a machine is 5. How much load it can exert for the effort of 2 kgf?

The mechanical advantage of a machine is 2. It is used to raise a load of 15 kgf. What effort is needed?