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The figure above shows an 80 kilogram person standing on a 20 kilogram platform suspended by a rope passing over a stationary pulley that is free to rotate The other end of the rope is held by the

The figure above shows an 80-kilogram person standing on a 20-kilogram platform suspended by a rope
passing over a stationary pulley that is free to rotate. The other end of the rope is held by the person. The
masses of the rope and pulley are negligible. You may use g = 10 m/ s2
a. If the platform and the person are at rest, what is the tension in the rope?
. Assume that friction is negligible, and
the parts of the rope shown remain vertical.
The person now pulls on the rope so that the acceleration of the person and the platform is 2 m/s2
b. What is the tension in the rope under these new conditions?
upward.
c. Under these conditions, what is the force exerted by the platform on the person

 

Jun 21 2020 View more View Less

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