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In the given arrangement of a doubly inclined plane two blocks M and m are placed. The blocks are connected by a light string passing over an ideal pulley as shown. The coefficient of friction between the surface of the plane and the blocks is 0.25. The value of m, for which M = 10 kg will move down with an acceleration of 2 m/s 2 , is: (take g = 10 m/s 2 and tan37° = 4 3 ) m M 37° 53°

1. 6.5 kg
2. 9 kg
3. 4.5 kg
4. 2.25 kg

Correct answer: 4.5 kg

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