Question

A staircase is an example of :

• A. lever
• B. wedge
• C. inclined plane
• D. wheel and axle

Answer 1

The correct option is C

inclined plane

1. Any sloping flat surface along which a load can be easily pushed or pulled is called an inclined plane.
2. The effort required to push a load up an inclined plane is less than lifting the same load directly.
3. So, the mechanical advantage of an inclined plane is greater than $1$.
4. Ramp, Gangplank, Hill road, and winding staircase are examples of inclined planes.
5. So, A staircase is an example of an inclined plane.

Hence, the correct option is an option (C).