Question

II), (u)-(111), (e)-(ii)
69
og so
What is energy ?
What do you understand by a machine? 59
What is the principle on which a machine works?
State two functions of a machine. 31
Short/Long Answer Questions
When is work said to be done by a force ?​

Answer 1

Answer:

is this is science question ?.............?.............?

Answer 2

Answer:

. what is energy ?

the ability to be very active or do a lot of work without getting tired is called energy.

. what do you understand by a machine. 59

no answer for your question sorry.

. what is the principle on which a machine works?

the work output of a machine is equal to the work input.

. state two functions of a machine. 31

● changing the speed of an object.

● applying force at a convenient point.

Explanation:

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