1986M1. 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/ s. Assume that friction is negligible, and the parts of the rope shown remain vertical. If the platform and the person are at rest, what is the tension in the rope? a. The person now pulls on the rope so that the acceleration of the person and the platform is 2 m/s² upward. b. What is the tension in the rope under these new conditions? Under these conditions, what is the force exerted by the platform on the person? C.

1986M1. 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/ s. Assume that friction is negligible, and the parts of the rope shown remain vertical. If the platform and the person are at rest, what is the tension in the rope? a. The person now pulls on the rope so that the acceleration of the person and the platform is 2 m/s² upward. b. What is the tension in the rope under these new conditions? Under these conditions, what is the force exerted by the platform on the person? C.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter13: Rotation Ii: A Conservation Approach

Section: Chapter Questions

Problem 31PQ: Sophia is playing with a set of wooden toys, rolling them offthe table and onto the floor. One of...

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