Why is wheel and axle called a continuous lever?

Answer: Wheel and axle has load, fulcrum and effort as in a lever. When we want to overcome a load using this machine, we need to continuously pull the rope attached to the load until the load reaches the required height. Owing to these reasons, a wheel and axle is called a continuous lever. 

Which simple machine is called a continuous lever?

Answer: The simple machine which is called a continuous lever is Wheel and Axle.
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This is an important reasoning question from Simple Machine of class 9. Normally, this question carries 2 marks so, you need to provide at least two reasons to support your answer.

Let us understand the question. It says 'a continuous lever'. 

So, what do you mean by continuous? Anything that has to be done without stopping (or continuously) until the required condition is fulfilled is called continuous. 

A lever is a rigid rod that can rotate freely around a fixed point called fulcrum. Normally x a lever has fulcrum (fixed point), load (object to overcome) and effort (force applied). 


When we compare these statements with a wheel and axle, we can also state wheel and axle as a lever. 

To overcome the attached load using this simple machine, we need to apply effort downwards at 360° angle continuously. The load gets overcomes only if we apply effort without stopping. So, effort needs to be applied continuously at 360° angle in this machine. 

Hence, we can conclude that wheel and axle is a continuous lever. 

Check other solutions as well:


CLASS 9 FREQUENTLY ASKED QUESTION FROM CHAPTER 3 SIMPLE MACHINE. WHEEL AND AXLE, A SIMPLE MACHINE IS CALLED AS A CONTINUOUS LEVER. ELABORATE THIS STATEMENT. JUSTIFY THIS STATEMENT. WHAT DOES IT MEAN. CLASS 9 PHYSICS. 

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