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# 1. Three blocks are connected by messless strings over frictionless pulleys. The masses of the blocks are 5111, m, and 3m respectively. The pulleys

Can someone explain these two problems to me? I don't know where to begin or how to solve.

1. Three blocks are connected by messless strings over frictionless pulleys. The masses of the blocks are
5111, m, and 3m respectively. The pulleys have masses of 2m and 4m respectively and both pulleys have
a radius of R. What is the acceleration of the blocks after they have been released if the coefﬁcient of
kinetic friction between block 1 and the table is pg? 2. A 1200 N uniform beam is attached to a vertical wall with a hinge at one end and is supported by a
cable at the other end. A crate that weighs 2000 N hangs from the far end of the beam. Calculate the
tension in the cable connected to the wall and the magnitude and direction of the force exerted by the
hinge on the beam.

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