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The is an arrangement of pulleys as shown in figure. All the pulley are massless and frcitionless and the strings used are inextensible. Each of these springs have a spring constant k. We define the stiffness of the assembly `k_(1)` as the force required to be applied at point A for its unit displacement.

Find `k_(1)` for n = 1

A

k

B

k/2

C

2k

D

4k

Text Solution

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The correct Answer is:
D
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