Question

Classify the following as simple machine 1. A Doorknob 2. A jackscrew. 3. A Staircase 4. A Railway signal​

Answer 1

Answer:

The simplest machine is a lever. It is a bar that may move freely around the point on which it sits. This is known as the fulcrum. The thing that must be moved is referred to as the load or resistance. The force exerted on the load is referred to as effort.

Explanation:

A railway signal - lever of second type

A door knob-a simple hinge

A jack screw-a big lever

 

Answer 2

• A simple machine is a mechanical instrument that alters the magnitude or direction of a force. In general, they are the most basic systems that amplify force by mechanical advantage.
• The load or resistance refers to the object that must be pushed. Effort refers to the force applied to the burden.
• Classification

1. A Doorknob:- Wheel and Axle
2. A jackscrew:- It is in the screw category.
3. A staircase:- Inclined plane.
4. A Railway signal:- As F is between load and effort, it is a first-order lever.