Question

13.
A light elastic cord of length 5.0m and stiffness k = 50 N/m is inside a fixed box with a small
portion of length x 20cm left out of a hole on a wall of the box as shown in the figure. If the cord
is pulled out of the box, a frictional force F25 N acts on the cord How much work has to be done
in slowly pulling out the entire length of the cord?
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op the soby antino
cap
F
(A™) F= (lo - Xo) +
ns:
k
21.
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Answer 1

Answer:

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