A 4.0 m long steel beam with a cross-sectional area of 1.0 x102m2 and a Young's modulus
of 2.0 x10' N/m 2 is wedged horizontally between two vertical walls. In order to wedge the
beam, it is compressed by 0.020 mm. If the coffecient of static friction between the beam
and the walls is 0.70, the maximum mass (including its own) it can bear without slipping
is:
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A 4.0 m long steel beam with a cross-sectional area of 1.0 x102m2 and a Young's modulus
of 2.0 x10'...
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