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I Review I Constants A uniform ladder with mass m2 and length L rests against a smooth wall. (Figure 1)A do-it-yourself enthusiast of mass mị stands on the ladder a distance d from the bottom (measured along the ladder). The ladder makes an angle 0 with the ground. There is no friction between the wall and the ladder, but there is a frictional force of magnitude f between the floor and the ladder. Nj is the magnitude of the normal force exerted by the wall on the ladder, and N2 is the magnitude of the normal force exerted by the ground on the ladder. Throughout the problem, consider counterclockwise torques to be positive. None of your answers should involve T (i.e., simplify your trig functions). Farl D Suppose that the actual coefficent of friction is one and a half times as large as the value of Pmin - That is, ls = (3/2)µmin . Under these circumstances, what is the magnitude of the force of friction ƒ that the floor applies to the ladder? Express your answer in terms of m1, m2, d, L, g, and 0. Remember to pay attention to the relation of force and ls. • View Available Hint(s) ? € K Figure 1 of 1 Σ Ф Ω m,d+m, cos O 2 f = m L sin 0 Submit Previous Answers X Incorrect; Try Again; 4 attempts remaining

I Review I Constants A uniform ladder with mass m2 and length L rests against a smooth wall. (Figure 1)A do-it-yourself enthusiast of mass mị stands on the ladder a distance d from the bottom (measured along the ladder). The ladder makes an angle 0 with the ground. There is no friction between the wall and the ladder, but there is a frictional force of magnitude f between the floor and the ladder. Nj is the magnitude of the normal force exerted by the wall on the ladder, and N2 is the magnitude of the normal force exerted by the ground on the ladder. Throughout the problem, consider counterclockwise torques to be positive. None of your answers should involve T (i.e., simplify your trig functions). Farl D Suppose that the actual coefficent of friction is one and a half times as large as the value of Pmin - That is, ls = (3/2)µmin . Under these circumstances, what is the magnitude of the force of friction ƒ that the floor applies to the ladder? Express your answer in terms of m1, m2, d, L, g, and 0. Remember to pay attention to the relation of force and ls. • View Available Hint(s) ? € K Figure 1 of 1 Σ Ф Ω m,d+m, cos O 2 f = m L sin 0 Submit Previous Answers X Incorrect; Try Again; 4 attempts remaining

College Physics
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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II Review I Constants ran D A uniform ladder with mass m2 and length L rests against a smooth wall. (Figure 1)A do-it-yourself enthusiast of mass mị stands on the ladder a distance d from the bottom (measured along the ladder). The ladder makes an angle 0 with the ground. There is no friction between the wall and the ladder, but there is a frictional force of magnitude f between the floor and the ladder. Ni is the magnitude of the normal force exerted by the wall on the ladder, and N2 is the magnitude of the normal force exerted by the ground on the ladder. Throughout the problem, consider counterclockwise torques to be positive. None of your answers should involve T (i.e., simplify your trig functions). Suppose that the actual coefficent of friction is one and a half times as large as the value of Umin . That is, Hs = (3/2)µmin . Under these circumstances, what is the magnitude of the force of friction f that the floor applies to the ladder? Express your answer in terms of m1, m2, d, L, g, and 0. Remember to pay attention to the relation of force and us. • View Available Hint(s) ? K IT Figure 1 of 1 Σ Ф Ω E L m,d+ f = g cos O 2 m2 L sin O Submit Previous Answers N2 X Incorrect; Try Again; 4 attempts remaining
Transcribed Image Text:II Review I Constants ran D A uniform ladder with mass m2 and length L rests against a smooth wall. (Figure 1)A do-it-yourself enthusiast of mass mị stands on the ladder a distance d from the bottom (measured along the ladder). The ladder makes an angle 0 with the ground. There is no friction between the wall and the ladder, but there is a frictional force of magnitude f between the floor and the ladder. Ni is the magnitude of the normal force exerted by the wall on the ladder, and N2 is the magnitude of the normal force exerted by the ground on the ladder. Throughout the problem, consider counterclockwise torques to be positive. None of your answers should involve T (i.e., simplify your trig functions). Suppose that the actual coefficent of friction is one and a half times as large as the value of Umin . That is, Hs = (3/2)µmin . Under these circumstances, what is the magnitude of the force of friction f that the floor applies to the ladder? Express your answer in terms of m1, m2, d, L, g, and 0. Remember to pay attention to the relation of force and us. • View Available Hint(s) ? K IT Figure 1 of 1 Σ Ф Ω E L m,d+ f = g cos O 2 m2 L sin O Submit Previous Answers N2 X Incorrect; Try Again; 4 attempts remaining
I Review l Constants A uniform ladder with mass m2 and length L rests against a smooth wall. (Figure 1)A do-it-yourself enthusiast of mass mį stands on the ladder a distance d from the bottom (measured along the ladder). The ladder makes an angle 0 with the ground. There is no friction between the wall and the ladder, but there is a frictional force of magnitude f between the floor and the ladder. Ni is the magnitude of the normal force exerted by the wall on the ladder, and N2 is the magnitude of the normal force exerted by the ground on the ladder. Throughout the problem, consider counterclockwise torques to be positive. None of your answers should involve T (i.e., simplify your trig functions). Part A What is the minimum coeffecient of static friction Umin required between the ladder and the ground so that the ladder does not slip? Express lmin in terms of m1, m2, d, L, and 0. • View Available Hint(s) (-) dm1 + L m2 cote Mmin 2 %3D mi+m2 Submit Previous Answers Figure 1 of 1 V Correct Part B Suppose that the actual coefficent of friction is one and a half times as large as the value of Umin. That is, ls = (3/2)µmin . Under these circumstances, what is the magnitude of the force of friction f that the floor applies to the ladder? m2 m1 Express your answer in terms of m1, m2, d, L, g, and 0. Remember to pay attention to the relation of force and us. • View Available Hint(s) N2 ?
Transcribed Image Text:I Review l Constants A uniform ladder with mass m2 and length L rests against a smooth wall. (Figure 1)A do-it-yourself enthusiast of mass mį stands on the ladder a distance d from the bottom (measured along the ladder). The ladder makes an angle 0 with the ground. There is no friction between the wall and the ladder, but there is a frictional force of magnitude f between the floor and the ladder. Ni is the magnitude of the normal force exerted by the wall on the ladder, and N2 is the magnitude of the normal force exerted by the ground on the ladder. Throughout the problem, consider counterclockwise torques to be positive. None of your answers should involve T (i.e., simplify your trig functions). Part A What is the minimum coeffecient of static friction Umin required between the ladder and the ground so that the ladder does not slip? Express lmin in terms of m1, m2, d, L, and 0. • View Available Hint(s) (-) dm1 + L m2 cote Mmin 2 %3D mi+m2 Submit Previous Answers Figure 1 of 1 V Correct Part B Suppose that the actual coefficent of friction is one and a half times as large as the value of Umin. That is, ls = (3/2)µmin . Under these circumstances, what is the magnitude of the force of friction f that the floor applies to the ladder? m2 m1 Express your answer in terms of m1, m2, d, L, g, and 0. Remember to pay attention to the relation of force and us. • View Available Hint(s) N2 ?
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