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A rock-climber (49 kg) is managing to be...

A rock-climber (49 kg) is managing to be at rest between two vertical rocks pressing one rock A by his feet and the other B by his back . If the coefficient of friction between his shoes and wall is A `1.2` while between his back and wall B is `0.8` and limiting friction acts at all the contacts , then : (a) What is his push against the rock ? (b) What percent of the weight is supported by the frictional force an legs ?

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