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Andre45 [30]
2 years ago
15

1. What do machines do? Change the amount of force one exerts. Decrease the amount of work that is done. Increase the amount of

work that is done. Eliminate friction.​
Physics
1 answer:
snow_lady [41]2 years ago
5 0

Answer: increase the amount of work that is done?

Explanation:

I’m not entirely sure to be honest but I’ll just use my logic here. Machines are made to increase efficiency and production. Machines are made to save time and energy as a pose to human work. So several machines can mass produce a lot of things and keep business booming. I’m not very good at explaining things but I hope this makes sense eventually.

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Question 2.
boyakko [2]

The tensile stress of the wire supporting 2 kg mass is determined as 6.1 x 10⁷ N/m².

<h3>Tensile stress of the wire</h3>

The tensile stress of the wire is calculated as follows;

σ = F/A

where;

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A = πr² = πD²/4

where;

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A = π x (0.64 x 10⁻³)²/4

A = 3.22 x 10⁻⁷ m²

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σ = 6.1 x 10⁷ N/m²

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2 years ago
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Answer:

1.2 kg

Explanation:

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