14) A 15-kg child is sitting on a playground teeter-totter, 1.5 m from the pivot. What is the magnitude of the minimum force, applied 0.30 m on the other side of the pivot, that is needed make the child lift off the ground? A) 75 N B) 740 N

14) A 15-kg child is sitting on a playground teeter-totter, 1.5 m from the pivot. What is the magnitude of the minimum force, applied 0.30 m on the other side of the pivot, that is needed make the child lift off the ground? A) 75 N B) 740 N

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 7PE: Two children of mass 20.0 kg and 30.0 kg sit balanced on a seesaw with the pivot point located at...

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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.

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14) A 15-kg child is sitting on a playground teeter-totter, 1.5 m from the pivot. What is the
magnitude of the minimum force, applied 0.30 m on the other side of the pivot, that is needed to
make the child lift off the ground?
A) 75 N
B) 740 N
C) 23 N
D) 44 N
E) 66 N

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