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With reference to machines define the following term: Ideal machine

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Question

With reference to machines define the following term:

Ideal machine

Definition
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Solution

A machine whose parts are weightless and frictionless, such that whatsoever is the energy spent on it, same is the energy produced by it, is called an ideal machine.

Output = Input

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Chapter 3: Machines - EXERCISE-1 [Page 50]

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