- #1
mamadou
- 24
- 1
1. Homework Statement
3 blocks A,B and C are attached between them by massless and frictionless strings , that passes through frictionless , massless pullies , the blocks A and B have the same weight 25 N and the same coefficient of kinetic friction 0.35 , the bloc C goes down with a constant speed .
Using Newton's 2nd law we get : [tex] a_{C} = 0 [/tex] because the speed is constant ,
what I can't figure out is why in the correction they said that : [tex] a_{B} = 0[/tex] and [tex] a_{A} = 0 [/tex]
why both of block A and B have ALSO a zero acceleration , how do we know that ?
3 blocks A,B and C are attached between them by massless and frictionless strings , that passes through frictionless , massless pullies , the blocks A and B have the same weight 25 N and the same coefficient of kinetic friction 0.35 , the bloc C goes down with a constant speed .
Using Newton's 2nd law we get : [tex] a_{C} = 0 [/tex] because the speed is constant ,
what I can't figure out is why in the correction they said that : [tex] a_{B} = 0[/tex] and [tex] a_{A} = 0 [/tex]
why both of block A and B have ALSO a zero acceleration , how do we know that ?
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