Question

why is it possible to get a perfect machine in practise ?

Answer 1

$\underline\bold\pink{\huge{HELLO\:DEAR}}$


$\underline\bold\red{\huge{ANSWER : }}$


⭐ Machine is a device which is capable of making our work easier by reducing effort. Machine can be of two types - Simple machine and complex machine.

⭐ For example, pulley is a simple machine but bicycle is a complex machine.

⭐ For an ideal machine, efficiency = 100 %. But in practice, efficiency can never be 100 %. It is because a small amount of input energy id always lost due to friction. Therefore, output energy is always less than the input energy.



✨✨✨✨ ALWAYS BE BRAINLY ✨✨✨✨

Answer 2

A perfect machine would be like a UFO’s spaceship? I see our machines coming along here but not up to par with perfection. One reason is what powers these machines. Batteries are insufficient and unreliable. Motors are primitive and too heavy. Fuel is not yet designed to work on minute amounts and last for maximum time. I think also there are laws of nature that need to be addressed. Gravity is weak and exerts more force when material is aligned improperly. This is why UFO’s are seen to ascend straight up at first so they can leave the field of gravity before shooting off into space or the stratosphere.