A plank of mass 87 kg and length 7.8 m is supported by, but not affixed to, two posts which are shown in the figure below. A 62 kg person starts walking along the plank to the right end. How close can the person get to the right end of the plank before the plank tips over? 7.8m a.8m

A plank of mass 87 kg and length 7.8 m is supported by, but not affixed to, two posts which are shown in the figure below. A 62 kg person starts walking along the plank to the right end. How close can the person get to the right end of the plank before the plank tips over? 7.8m a.8m

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter9: Statics And Torque

Section: Chapter Questions

Problem 15CQ: Certain of dinosaurs were bipedal (walked on two legs). What at is a good reason that these...

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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 plank of mass 87 kg and length 7.8 m is supported by, but not affixed to, two posts which are
shown in the figure below. A 62 kg person starts walking along the plank to the right end. How
close can the person get to the right end of the plank before the plank tips over?
7.8m
2.8m

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