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What is force constant of a spring?...

What is force constant of a spring?

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Spring constant of force constant of a spring is defined as the restoring force produced per unit extension of the spring.
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Knowledge Check

  • K is a force constant of a spring. The work done in increasing its extension from l_1 to l_2 will be

    A
    (A) `K(l_1-l_2)`
    B
    (B) `(K(l_1-l_2))/2`
    C
    (C) `K(l_2^2+l_1^2)`
    D
    (D) `(K(l_2^2-l_1^2))/2`

  • Length and force constant of a spring are L and K respectively. When a force T is applied on it an elongation x is produced. Now the spring is cut into two equal parts and they are connected parallel with each other and the same force T is applied on it. What will be the elongation now?

    A
    (A) x
    B
    (B) x/2
    C
    (C) 2x
    D
    (D) x/4

  • Force constants of two springs are k_1 and k_2 . One end of a spring is connected with one end of the other. Equivalent force constant of the spring system will be

    A
    `((k_1+k_2))/2`
    B
    `2(k_1+k_2)`
    C
    `((k_1+k_2))/(k_1k_2)`
    D
    `(k_1k_2)/(k_1+k_2)`

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    When a mass of 4 kg is hung from the lower and of a spring.IF elongates by 1cm.(i) What is the force constant of the spring? (ii) If a load of 2kg is hung from the lower end of the spring , then find its elongation.

    The force constant of a spring is k. The spring is cut into three equals parts. Find the force constant of each part.

    Force constants of two springs are k_1 and k_2 One end of a spring is connected with one end of the other. Equivalent force constant of the spring system will be

    A spring is cut into two pieces in such a way that one piece is double the length of the other. If the force constant of main spring is k then force constant of the longer part is

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