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A weight of 40 N falls from a height of 200 mm on a rigid massless bar supported by two identical springs as shown in the figure. If the maximum deflection is 20 mm then the stiffness of spring (in N/mm) is ………..
    Correct answer is '22'. Can you explain this answer?
    Verified Answer
    A weight of 40 N falls from a height of 200 mm on a rigid massless bar...
    mg(h+x) = 2 × 1/2 kx2
    40 ×(200+x) = kx2
    40 ×(200+x) = k ×(20)2
    k = 22 N/mm
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    A weight of 40 N falls from a height of 200 mm on a rigid massless bar supported by two identical springs as shown in the figure. If the maximum deflection is 20 mm then the stiffness of spring (in N/mm) is ………..Correct answer is '22'. Can you explain this answer?
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