A 67.0 kg adult sits at one end of a 10.0 m board, on the other end of which sits his 23.0 kg child. Where should the pivot be placed so the board is balanced if the board has a mass of 12.0 kg? (The board’s center of gravity is at the center of the board.)

A 67.0 kg adult sits at one end of a 10.0 m board, on the other end of which sits his 23.0 kg child. Where should the pivot be placed so the board is balanced if the board has a mass of 12.0 kg? (The board’s center of gravity is at the center of the board.)

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 1STP

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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

A 67.0 kg adult sits at one end of a 10.0 m board, on the other end of which sits his 23.0 kg child.
Where should the pivot be placed so the board is balanced if the board has a mass of 12.0 kg? (The
board’s center of gravity is at the center of the board.)

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