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    PLEASE CAN SOMEONE HELP.
    Moments Question.

    you can only let forces up let forces down, when what is equal?
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    A bit late isn't it. I don't know exactly what your trying to ask ?
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    I don't get your question. Go to bed. Get up earlier than usual. Goodnight

    PS this isn't to do with moments but you might be wanting the answer: When forces are balanced, an object travels at a constant velocity ( acceleration = 0 )
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    Good luck. Don't forget to SUVAT!
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    (Original post by Nonbeatific)
    A bit late isn't it. I don't know exactly what your trying to ask ?
    ah i know, but this is something i need to clear up.
    So for moments, forces up Ie. Resultants dont always equal the forces down. ie.
    R1 + R2 can't eqaul (sum of forces down) 60g.

    But why is this the case again?
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    (Original post by i'm no superman)
    Good luck. Don't forget to SUVAT!
    whats that the equations of motion??v=u + at etc..
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    (Original post by MedAmy)
    ah i know, but this is something i need to clear up.
    So for moments, forces up Ie. Resultants dont always equal the forces down. ie.
    R1 + R2 can't eqaul (sum of forces down) 60g.

    But why is this the case again?
    assuming the system is in equilibrium

    all forces should resolve horizontally and vertically to 0, as should anticlockwise and clockwise moments.
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    (Original post by MedAmy)
    whats that the equations of motion??v=u + at etc..


    Where...
    s = the distance between initial and final positions (displacement) (sometimes denoted R or x)
    u = the initial velocity (speed in a given direction)
    v = the final velocity
    a = the constant acceleration
    t = the time taken to move from the initial state to the final state
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    (Original post by MedAmy)
    ah i know, but this is something i need to clear up.
    So for moments, forces up Ie. Resultants dont always equal the forces down. ie.
    R1 + R2 can't eqaul (sum of forces down) 60g.

    But why is this the case again?
    If the system is in equilibrium, then all the forces must be balanced.

    So as long as the system is stationary (acceleration = 0), vertical forces or components up, will equal vertical components down.

    and clockwise and anticlockwise moments will = 0.
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    (Original post by MedAmy)
    whats that the equations of motion??v=u + at etc..
    yes :yes:
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    (Original post by i'm no superman)


    Where...
    s = the distance between initial and final positions (displacement) (sometimes denoted R or x)
    u = the initial velocity (speed in a given direction)
    v = the final velocity
    a = the constant acceleration
    t = the time taken to move from the initial state to the final state
    thanks.. I know these off by heart..
 
 
 
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