Screws: The Essential Simple Machines

What are nut bolt, nail, and screw jack examples of?

A) Wedge

B) Inclined plane

C) Screw

Answer:

Nut bolt, nail, and screw jack are all examples of screws.

Explanation:

The nut bolt, nail, and screw jack mentioned in the question are all examples of screws. A screw is a simple machine that converts rotational motion into linear motion and amplifies the force in the process. It achieves this through its threads or helical ridge, which advance when rotated.

For example, a screw jack, also known as a car jack or a jack screw, can lift heavy weights with less effort by turning the screw's handle. Similarly, using a nut and bolt involves rotating the nut along the threaded bolt. Nails, although not explicitly implementing rotational motion, also have a twisted groove that provides better grip, similar to the mechanism of a screw.

By understanding the basic principles behind screws, we can appreciate how these simple machines play a crucial role in various applications, from construction to machinery. The versatility and efficiency of screws make them an essential component in our everyday lives.