anonymous
  • anonymous
Question
Physics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
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|
anonymous
  • anonymous
Hi whats your idea about ?
anonymous
  • anonymous
When the rope pulls block B, what happens to block A?

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anonymous
  • anonymous
|dw:1331280621464:dw|
anonymous
  • anonymous
\[T=(m _{A}+m _{B})a\]
anonymous
  • anonymous
we take 2body in one mass
anonymous
  • anonymous
Okay. When we pull B for a while, what happens to A?
anonymous
  • anonymous
hence no friction between them a go back
anonymous
  • anonymous
So block A doesn't move?
anonymous
  • anonymous
no i mean block A go back notice that we assume no friction between 2masses
anonymous
  • anonymous
Because there's no friction between blocks A and B, Block A goes back and falls down as we pull block B?
anonymous
  • anonymous
i think yes hence no force check T
anonymous
  • anonymous
Cool :) Thanks
anonymous
  • anonymous
your welcome friend. for confidece ask another we solve that whit this assumption really no friction on all surfaces
anonymous
  • anonymous
heena whats your idea?
anonymous
  • anonymous
asking me ok wait lemme redo this just a sec
anonymous
  • anonymous
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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