College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Concept explainers
Rotational Equilibrium And Rotational Dynamics
In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics.
Equilibrium of Forces
The tension created on one body during push or pull is known as force.
Question
I am unsure how to start this problem. I know that forces will cancel out with the chosen rotation but I don't know how to do this.
Transcribed Image Text:You are working in an ice skating rink and have been asked to hang a new banner on the wall. Your friend is helping you so that the
ladder does not collapse by exerting a force FAL at an angle o relative to the horizontal. See the diagram below.
You
Wall
AL
Ice Floor
The ladder has a length L and makes an angle of 0 with respect to the vertical wall. You have a mass, my, and are a horizontal
distance x from the wall. The ladder has a mass of mL. Because the wall is slick, and the ice on the floor is slick, the frictional forces
acting on the ladder are negligible.
Transcribed Image Text:Part One
Find a formula for the magnitude of the force that your friend must exert to keep the ladder from falling, in terms of the following
variables: x, L, my, mµ,0, ¢. Then use the following values to get a number for the magnitude of FAL-
0 = 32.5 degrees
O = 23.075 degrees
x = 2.784 meters
L = 9.6 meters
тү 3 82 kg
mL = 39.36 kg
A Hint About the AOR
FAL =
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