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Hmord

  • 2 years ago

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  1. Hmord
    • 2 years ago
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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|

  2. hosein
    • 2 years ago
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    Hi whats your idea about ?

  3. Hmord
    • 2 years ago
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    When the rope pulls block B, what happens to block A?

  4. Hmord
    • 2 years ago
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    |dw:1331280621464:dw|

  5. hosein
    • 2 years ago
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    \[T=(m _{A}+m _{B})a\]

  6. hosein
    • 2 years ago
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    we take 2body in one mass

  7. Hmord
    • 2 years ago
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    Okay. When we pull B for a while, what happens to A?

  8. hosein
    • 2 years ago
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    hence no friction between them a go back

  9. Hmord
    • 2 years ago
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    So block A doesn't move?

  10. hosein
    • 2 years ago
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    no i mean block A go back notice that we assume no friction between 2masses

  11. Hmord
    • 2 years ago
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    Because there's no friction between blocks A and B, Block A goes back and falls down as we pull block B?

  12. hosein
    • 2 years ago
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    i think yes hence no force check T

  13. Hmord
    • 2 years ago
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    Cool :) Thanks

  14. hosein
    • 2 years ago
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    your welcome friend. for confidece ask another we solve that whit this assumption really no friction on all surfaces

  15. hosein
    • 2 years ago
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    heena whats your idea?

  16. heena
    • 2 years ago
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    asking me ok wait lemme redo this just a sec

  17. heena
    • 2 years ago
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    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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