(i) In what way does an 'Ideal machine' differ from a 'Practical machine'?
(ii) Can a single machine act as a force multiplier and a speed multiplier at the same time?

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Solution

(i) The efficiency of an ideal machine (free from friction etc) is equal to $1$ . But in actual practical, the efficiency is less than $1$ due to the energy loss in friction.
(ii) A single machine cannot act as a force multiplier and a speed multiplier at the same time.

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When does a machine act as (a) a force multiplier, (b) a speed multiplier? Can a machine act as a force multiplier and a speed multiplier simultaneously?

Q. Can a simple machine act as a force multiplier and a speed multiplier at the same time?

A machine can act as a force multiplier and speed multiplier simultaneously.

A machine acts as a force multiplier and a speed multiplier simultaneously.

Q. Hello Sir/Madam

Can a machine act as force multiplier as well as speed multiplier simultaneously?

Please explain why and provide examples

Thanks n Regards

Gopika

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(i) In what way does an 'Ideal machine' differ from a 'Practical machine'?(ii) Can a single machine act as a force multiplier and a speed multiplier at the same time?

(i) The efficiency of an ideal machine (free from friction etc) is equal to 1. But in actual practical, the efficiency is less than 1 due to the energy loss in friction.(ii) A single machine cannot act as a force multiplier and a speed multiplier at the same time.

(i) In what way does an 'Ideal machine' differ from a 'Practical machine'?
(ii) Can a single machine act as a force multiplier and a speed multiplier at the same time?

(i) The efficiency of an ideal machine (free from friction etc) is equal to $1$ . But in actual practical, the efficiency is less than $1$ due to the energy loss in friction.
(ii) A single machine cannot act as a force multiplier and a speed multiplier at the same time.