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Block A is on top of block B and block B is being pulled with a tension T. There is no friction between A and B nor is there friction between B and the floor. What is the ensuing motion of the blocks when T is applied? |dw:1331273978869:dw|
Hi whats your idea about ?
When the rope pulls block B, what happens to block A?

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Other answers:

|dw:1331280621464:dw|
\[T=(m _{A}+m _{B})a\]
we take 2body in one mass
Okay. When we pull B for a while, what happens to A?
hence no friction between them a go back
So block A doesn't move?
no i mean block A go back notice that we assume no friction between 2masses
Because there's no friction between blocks A and B, Block A goes back and falls down as we pull block B?
i think yes hence no force check T
Cool :) Thanks
your welcome friend. for confidece ask another we solve that whit this assumption really no friction on all surfaces
heena whats your idea?
asking me ok wait lemme redo this just a sec
welll if there is no friction between block A and B then the upper block fall down as due to ma lower block moves noe qn ariseswhen tension applied as by looking this case it seems like freely falling body because tension is applied but in which respect as no friction b/w block and floor if u applied a lil force or u dont it ll move due to its weight

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