A homogenous ladder 10m long and weighing 3.5 kg/m leans against a vertical wall. The angle between it and the floor is 60 degrees. The coefficient of friction of the ladder against the ground as well as the wall is 0.35. 1. How far up the ladder measured from the ground can a 65-kg man climb before it starts to slide? a. 4.5 m b. 6.3 m c. 5.4 m d. 7.3 m 2. Compute the reaction at the wall when it starts to slide, in N. a. 324.07 b. 390.15 c. 410.32 d. 465.67 3. Compute the reaction between the ground and the ladder when it starts to slide, in N. a. 780.06 b. 925.92 c. 598.18 d. 825.34

A homogenous ladder 10m long and weighing 3.5 kg/m leans against a vertical wall. The angle between it and the floor is 60 degrees. The coefficient of friction of the ladder against the ground as well as the wall is 0.35. 1. How far up the ladder measured from the ground can a 65-kg man climb before it starts to slide? a. 4.5 m b. 6.3 m c. 5.4 m d. 7.3 m 2. Compute the reaction at the wall when it starts to slide, in N. a. 324.07 b. 390.15 c. 410.32 d. 465.67 3. Compute the reaction between the ground and the ladder when it starts to slide, in N. a. 780.06 b. 925.92 c. 598.18 d. 825.34

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section: Chapter Questions

Problem 54AP: A 0.400-kg pendulum bob passes through the lowest part of its path at a speed of 3.00 m/s. (a) What...

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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.

Question

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1. How far up the ladder measured from the ground can a 65-kg man climb before it starts to slide?

a. 4.5 m

b. 6.3 m

c. 5.4 m

d. 7.3 m

2. Compute the reaction at the wall when it starts to slide, in N.

a. 324.07

b. 390.15

c. 410.32

d. 465.67

3. Compute the reaction between the ground and the ladder when it starts to slide, in N.

a. 780.06

b. 925.92

c. 598.18

d. 825.34

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