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4. A force of 1200 lb compresses a spring from its natural lengthof 18 in. to a length of 16 in. How much work is done in com-pressing it from 16 in. to 14 in.?

Question
4. A force of 1200 lb compresses a spring from its natural length
of 18 in. to a length of 16 in. How much work is done in com-
pressing it from 16 in. to 14 in.?
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4. A force of 1200 lb compresses a spring from its natural length of 18 in. to a length of 16 in. How much work is done in com- pressing it from 16 in. to 14 in.?

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Step 1

We have to find work done to compress the spring from its natural length (L=18).

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Step 2

Now as we know that F=kx  where k is spring constant  so first we will find vaue of k .

Initially it is compressed from 18 inch to 16 inch means L=0 to L=2 so value of k is calculated , work is shown below

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Step 3

We will use power rule of integral to integr...

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Tagged in

Math

Calculus

Integration

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