A 20-kg board serves as seesaw for two children. One child has a mass of 30-kg and sits 2.5 m from the pivot point. At what distance from the pivot point must a 25-kg child place herself to balance the seesaw? Assume the board is centered at the pivot.

A 20-kg board serves as seesaw for two children. One child has a mass of 30-kg and sits 2.5 m from the pivot point. At what distance from the pivot point must a 25-kg child place herself to balance the seesaw? Assume the board is centered at the pivot.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section8.2: Rotational Dynamics

Problem 16PP

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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 20-kg board serves as seesaw for two children.
One child has a mass of 30-kg and sits 2.5 m from the
pivot point. At what distance from the pivot point
must a 25-kg child place herself to balance the
seesaw? Assume the board is centered at the pivot.

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