Questions
Force constants of two wires A and B of the same material are k and 2k, respectively. If the two wires
are stretched equally, then the ratio of work done in stretching is
detailed solution
Correct option is B
Work done in a stretched wire, W=12kx2Given, kA=k and kB=2k⇒ WA=12kx2and WB=12(2k)x2=kx2Hence, the ratio of work done in stretching the wires.WAWB=(1/2)kx2kx2⇒WAWB=12Talk to our academic expert!
Similar Questions
Two similar springs P and Q have spring constants such that Kp > . They are stretched first by the same amount (case a), then by the same force (case b). The work done by the springs are related as, in case (a) and case (b), respectively.
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