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elena55 [62]
3 years ago
5

Please help me ASAP.

Mathematics
2 answers:
Mademuasel [1]3 years ago
8 0
A = 3/4, an unsimplified version of this can be 6/8

B = 3/5, an unsimplified version of this could be 6/10

C = 3/2(unsimplified), or 1 1/2(simplified)

D = 3/1(unsimplified), or 3(simplified)

Hope I could help
WITCHER [35]3 years ago
7 0

Answer:

A=3/4 B=3/5 C= 3/2 and/or 1 1/2 D=3/1 and/or 3

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago
Use Hooke's Law to determine the work done by the variable force in the spring problem. A force of 450 newtons stretches a sprin
vlada-n [284]

Answer:

The work done is 202.50Nm

Step-by-step explanation:

Given

F =450N

x_1 = 30cm

x_2 = 60cm

Required

The work done

First, we calculate the spring constant (k)

F = kx_1

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k =15N/cm

So:

F = kx_1

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The work done using Hooke's law is:

W =\int\limits^a_b {F(x)} \, dx

This gives:

W =\int\limits^{60}_{30} {15x} \, dx

Rewrite as:

W =15\int\limits^{60}_{30} {x} \, dx

Integrate

W =15 \frac{x^2}{2}|\limits^{60}_{30}

This gives:

W =15 *\frac{60^2 - 30^2}{2}

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W =20250N-cm

Convert to Nm

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wariber [46]

Answer:

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Read 2 more answers
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