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Physics / Physics: Principles with Applications 6 / Chapter 9 / Problem 7PE

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

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Two children of mass 20 kg and 30 kg sit balanced on a

Chapter 3, Problem 7PE

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QUESTION:

Two children of mass 20 kg and 30 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. If the children are separated by a distance of 3 m, at what distance from the pivot point is the small child sitting in order to maintain the balance?

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QUESTION:

Two children of mass 20 kg and 30 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. If the children are separated by a distance of 3 m, at what distance from the pivot point is the small child sitting in order to maintain the balance?

ANSWER:

Solution 7PE Step-by-step solution Step 1 of 2 The system is balanced, so net external torque acting on seesaw is zero. Or, Here, and is the torque acted on seesaw, and is the separation from pivoted point of children with mass and respectively.

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