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Get Full Access to Physics - 4 Edition - Chapter 11 - Problem 6
Get Full Access to Physics - 4 Edition - Chapter 11 - Problem 6

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# Solved: At the local playground, a 16-kg child sits on the

ISBN: 9780321611116 152

## Solution for problem 6 Chapter 11

Physics | 4th Edition

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Physics | 4th Edition

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Problem 6

At the local playground, a 16-kg child sits on the end of a horizontal teeter-totter, 1.5 m from the pivot point. On the other side of the pivot an adult pushes straight down on the teeter-totter with a force of 95 N. In which direction does the teeter-totter rotate if the adult applies the force at a distance of (a) 3.0 m, (b) 2.5 m, or (c) 2.0 m from the pivot?

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Modern Physics Lecture 1: Foundations and Special Relativity Position, Time, and Rotation are all continuous symmetries (discrete symmetries such as reflection do not produce the same results as below):  Invariance in position (changing where in space you perform your experiment) proves momentum conservation  Invariance in rotation (eg. rotating your entire experiment by 90 degrees) proves conservation of angular momentum  Invariance in time (changing when in time you perform your experiment, eg. today vs. tomorrow) proves energy conservation Newtonian Mechanics:  Inertia  F=ma  The force of object 1 on object 2 is equal in magnitude to the force of object 2 on object 1  True in an inertial reference frame

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