A board of weight W1 is placed across the channel and a boy of weight W2 attempts to walk across If the coefficient of static friction at A and B s, determine if he can make the crossing and if not, how far will he get from A before the board slips Given W1 50 lb W2 100 lb s 0 4 a 10 ft b 4 c 3 ...

Initial guesses Given x 0 0 Mg 0 NA NB d NA NB ...

A board of weight W1 is placed across the channel and a boy of weight W2 attempts

Question:

A board of weight W1 is placed across the channel and a boy of weight W2 attempts to walk across. If the coefficient of static friction at A and B μs, determine if he can make the crossing; and if not, how far will he get from A before the board slips?

Given:

W1 = 50 lb

W2 = 100 lb

μs = 0.4

a = 10 ft

b = 4

c = 3

A board of weight W1 is placed across the channel and a boy of w