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  4. The arrangement shown in figure is at rest. An ideal spring of natural length l0 having spring constant k=220 Nm -1, is connected to block A. Blocks A and B are connected by an ideal string passing through a friction less pulley. The mass of each block A and B is equal to m=2 kg when the spring was in natural length, the whole system is given an acceleration veca as shown. If coefficient of friction of both surfaces is μ=0.25, then find the maximum extension (in cm ) of the spring. (g=10 m s -2).

Q. The arrangement shown in figure is at rest. An ideal spring of natural length having spring constant , is connected to block . Blocks and are connected by an ideal string passing through a friction less pulley. The mass of each block and is equal to when the spring was in natural length, the whole system is given an acceleration as shown. If coefficient of friction of both surfaces is , then find the maximum extension (in ) of the spring. .

Work, Energy and Power Report Error

Solution:

Let the maximum extension in spring be .

Apply work-energy theorem: (Net work done by tension will be zero)


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