Two identical uniform beams, each having a mass of 4 kg, are symmetrically set up against each other on a floor with which they have a coefficient of static friction µ = 0.609 .(adsbygoogle = window.adsbygoogle || []).push({});

a) What is the minimum angle the beams can make with the floor without falling?

b) For the angle calculated in part (a), what is the magnitude of the force exerted on one beam by the other beam, at the apex?

Next a heavy point mass 1.2 kg is balanced on the apex.

c) What is the normal force exerted on each beam by the floor?

d) For this case, what is the minimum angle the beams can make with the floor without sliding?

Thanks for the help in advance...see the attached picture for what the problem looks like.

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# Homework Help: Two Beams

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