Answer:
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<span> -14x + 11y = 23
+2(7x - 3y = 37)
----------------------
0 + 5y = 97
y = 97/5
y = 19.4
7x - 3(19.4) = 37
7x - 58.2 = 37
7x = 37 + 58.2
7x = 95.2
x = 95.2/7
x = 13.6
Check
-14(13.6) + 11(19.4) = 23
-190.4 + 213.4 = 23
</span>
a.
trust me it's the correct answer :)
Answer:
5.0 ft-lbf
Step-by-step explanation:
The force is
This force is not a constant force. For a non-constant force, the work done, <em>W</em>, is
with and the initial and final displacements respectively.
From the question, and .
Then
Evaluating the indefinite integral,
From the rules of integration,
Returning the limits,