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  4. In the situation shown in figure, all the strings are light and inextensible and pullies are light. There is no friction at any surface and all blocks are of cuboidal shape. A horizontal force of magnitude F is applied to right most free end of string in both cases shown in the figure. At the instant shown, the tension in all strings are non-zero. Let the magnitudes of acceleration of large blocks (of mass M ) in Fig.(a) and Fig. (b) be a1 and a2, respectively. Then,

Q. In the situation shown in figure, all the strings are light and inextensible and pullies are light. There is no friction at any surface and all blocks are of cuboidal shape. horizontal force of magnitude is applied to right most free end of string in both cases shown in the figure. At the instant shown, the tension in all strings are non-zero. Let the magnitudes of acceleration of large blocks (of mass ) in Fig.(a) and Fig. (b) be and , respectively. Then,

Laws of Motion Report Error

Solution:

From FBD, it is obvious that net force on each block is zero in horizontal direction. So

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