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

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 74P: A stepladder of negligible weight is constructed as shown in Figure P10.73, with AC = BC = ℓ. A...

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