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

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 117AP: Two children push on opposite sides of a door during play. Both push horizontally and perpendicular...

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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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