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Inclined Planes

12.A triangul...

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12.A triangular block of mass M rests on a smooth surface as shown in the figure. A cubical block of mass m rests on the inclined surface. If all surfaces are frictionless, the force that must be applied to M so as to keep m stationary relative to M is : (a) Mg tan 30^° (b) mg tan 30^° (c) (M+m)g tan 30^° (d) (M+m)g cos 30^°

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