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Question: 

A 20.0-m-long uniform beam weighing 650 N rests on walls A and B, as shown in Fig. 9–62.

  1. Find the maximum weight of a person who can walk to the extreme end D without tipping the beam.

Find the forces that the walls A and B exert on the beam when the person is standing:

  1. at D;
  2. 2.0 m to the right of A.
Problem 22.

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 
  1. $650 \textrm{ N}$
  2. $F_A = 0 \textrm{ N, } F_B = 1.30 \times 10^3 \textrm{ N}$
  3. $F_A = 810 \textrm{ N, } F_B = 490 \textrm{ N}$

Giancoli 7th Edition, Chapter 9, Problem 22

(6:42)

Chapter 9, Problem 22 is solved.

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