Question

B. State whether the following statements are
D.
true or false :
1. Machines are used for doing dangerous
works only.
2. The ratio between useful load lifted to
the effort applied is called mechanical
advantage
3. The energy supplied to a machine in doing
some mechanical work is called input
energy.
please answer my question
and if anyone copies from Google I won't be marking brainleast​

Answer 1

Answer:

1. False

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Answer 2

Answer:

1.false2.true3. true

may it helps you with my answer