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Statement of a problem № 3132

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Two smooth inclined planes of angles 45° and hinged together back to back. Two masses m and 3m connected by a fine string passing over a light pulley move on the planes. Show that the acceleration of their centre of mass is sqrt(5/8)g at an angle tan^1 A? to the horizon (Fig. 2.10).

Solution:
Two smooth inclined planes of angles 45° and hinged together back to back. Two

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