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Physics-

General

Easy

Question

In the arrangement as shown, the spheres A, C and block B of same mass move together due to sufficient friction at their contacts with coefficient of friction $mu$ . The other surfaces are smooth and force constant of all springs is k. When the lower springs are compressed by x. What is the reaction exerted by A and B ? The natural length of all springs is same :

$\frac{2 k x}{μ}$
$\frac{k x}{2 μ}$
$\frac{k x}{μ}$
$\frac{2 k x}{3 μ}$

The correct answer is: $fraction numerator 2 k x over denominator 3 mu end fraction$

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