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Two springs of force constant 100 N/m and 150 N/m are in series as shown. The block is pulled by a distance of 2.5 cm to the right from equilibrium position. What is the ratio of work done on the spring at left to the work done on the spring at right?

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a
32
b
23
c
0.2
d
0.5

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detailed solution

Correct option is A

Wleft  spring=12k1e12= F22k1Wright  spring=12k2e22=F22K2WleftWright=k2k1=150100=32

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Similar Questions

Two similar springs P and Q have spring constants Kp and KQ such that Kp > KQ. They are stretched first by the same amount (case a), then by the same force (case b). The work done by the springs WP and WQ are related as, in case (a) and case (b), respectively.


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