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Solnce55 [7]
3 years ago
15

A 50 meter chain with uniform density and a mass of 40 kilograms is hanging from the roof of a building under construction. How

much work (in Nm) is required to pull the chain up?
Mathematics
2 answers:
Brums [2.3K]3 years ago
8 0

Answer:

19,600 Nm

Step-by-step explanation:

WD = mgh

= 40 × 9.8 × 50

= 19600 Nm

sertanlavr [38]3 years ago
5 0

Answer:

W = 19600 N m

Step-by-step explanation:

W = force * distance

The force is the weight times gravity since it is hanging down

W = 40 kg* 9.8 m/s^2 * 50m

    19600 kg m^2/s^2

A newton is  kg m/ s^2

W = 19600 N m

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Answer:

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Step-by-step explanation:

(x - 10) + (2x - 10) = 52

3x + 20 = 52

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The father is 2 times his son's age.

2x

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So, the son is 24 and the father is 48.

10 years ago, son was 14 and father was 38, if added, this adds up to 52, so we know our calculations are correct.

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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