Answered: 1. A bridge AB is 36.5 m long. It…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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1. A bridge AB is 36.5 m long. It weighs 2.56 x 105 N. A truck weighing 5.25 x 104 N is 10.2 m from one end of the bridge. Calculate the upward force exerted by each pier to support this weight.
2. A 20 kg child and a 30 kg child sit at opposite ends of a 4m seesaw that is pivoted at its center. Where should another 20 kg child sit in order to balance the seesaw?
3. A man stands on his toes by exerting an upward force through the Achilles tendon, as in
the figure. Calculate the force in the Achilles tendon if he stands on one foot and has a mass of 80kg.

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1. A bridge AB is 36.5 m long. It weighs 2.56 x 10° N. A truck weighing 5.25 x 104 N is 10.2
m from one end of the bridge. Calculate the upward force exerted by each pier to support
this weight.
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2. A 20 kg child and a 30 kg child sit at opposite ends of a 4m seesaw that is pivoted at its
center. Where should another 20 kg child sit in order to balance the seesaw?
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3. A man stands on his toes by exerting an upward force through the Achilles tendon, as in
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the figure. Calculate the force in the Achilles tendon if he stands on one foot and has a mass
of 80kg.
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