Blocks A and B have a mass MA and MB, respectively If the coefficient of static friction between A and B and between B and C is s and between the ropes and the pegs D and E s, determine the smallest force F needed to cause motion of block B Units Used kN 103 N Given 45 deg s 0 25 MA 100 kg s 0 5 MB 150 kg P 30 N g 9 81m s2 P

Question: Blocks A and B have a mass MA and MB, respectively. If the coefficient of static friction between A and B and between B and

Blocks A and B have a mass MA and MB, respectively. If the coefficient of static friction between A and B and between B and C is μs and between the ropes and the pegs D and E μs, determine the smallest force F needed to cause motion of block B .

Units Used:

kN = 103 N

Given:

θ = 45 deg μs = 0.25

MA = 100 kg μs = 0.5

MB = 150 kg P = 30 N

g = 9.81m/s2

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