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    Spring Force - Practice Questions & MCQ

    Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

    Quick Facts

    • Spring Force is considered one of the most asked concept.

    • 32 Questions around this concept.

    Solve by difficulty

    A spring is compressed by a distance x. If the same spring is compressed by a distance of 2x, the force required to compress it by 2x will be:

    What is the relationship between k=spring constant and  l=length of spring?

    Assertion: The force exerted by a spring is directly proportional to its displacement from its equilibrium position.

    Reason: The spring force follows Hooke's Law, which states that the force exerted by a spring is directly proportional to its displacement from its equilibrium position.

    For a Series combination of springs, the effective spring constant is given by?

    For the parallel combination of springs having spring constant k \ and \ 5 k, the effective spring constant is given by?

     A block with a mass of 6 kg is suspended from an ideal spring having negligible mass and stretches the spring by 0.3m. Then find the force constant of spring in N/m:

    Which of the following graphs shows the spring constant $'k'$ versus length ' $l^{\prime}$ of the spring correctly?

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    Concepts Covered - 1

    Spring Force
    1. Spring force is given by:

    $
    F_{s p}=-k \Delta x
    $

    where,
    $\mathrm{F}_{\mathrm{sp}}=$ spring force
    $\mathrm{k}=$ spring constant
    $\Delta x=$ net elongation or compression in the spring
    2. Force at every point in a massless spring remains same, so we can solve questions of spring by considering it as string and spring force as tension.
    3. Spring constant:- $k \alpha \frac{1}{l}$

    Where, k=spring constant

                 l=length of spring

    4.    Combination of Spring:-

    • Series combination:- 

       

    $\frac{1}{k_{e q}}=\frac{1}{k_1}+\frac{1}{k_2}$

    • Parallel combination:-

    $k_{e q}=k_1+k_2$

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    Spring Force

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