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Mechanics help? Watch

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    How could I solve this question? A diagram would be great, but an explanation on its own would be very good as well.

    Thanks!

    EDIT: Sorry, I thought it had been attached successfully. Evidently not :-(!

    It won't attach (I think) - here it is: 'A girl, of mass 40kg, is travelling in a lift holding a parcel by means of a light, inextensible string. The lift is travelling upwards and decelerating at 3ms-2, and the contact force exerted by the girl on the floor of the lift is 294N. Find the mass of the parcel.'
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    if you could post the question that would be great !
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    (Original post by petrus123)
    How could I solve this question? A diagram would be great, but an explanation on its own would be very good as well.

    Thanks!
    Feed me mechanics questions
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    (Original post by the bear)
    if you could post the question that would be great !
    Haha!
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    (Original post by the bear)
    if you could post the question that would be great !
    Bear, I'm so sorry, it won't let me rep you :cry:
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    (Original post by CheeseIsVeg)
    Bear, I'm so sorry, it won't let me rep you :cry:
    :hugs: don't worry i already have 58754 reps

    :smug: *
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    (Original post by the bear)
    :hugs: don't worry i already have 58754 reps

    :smug: *
    Hah, so you don't even need my worthless rep :hand:
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    (Original post by CheeseIsVeg)
    Bear, I'm so sorry, it won't let me rep you :cry:
    Sorry, I've edited to add the question. It wouldn't let me attach, and I forgot to check :-(
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    (Original post by CheeseIsVeg)
    Hah, so you don't even need my worthless rep :hand:
    all rep is good, but i did not want you to be upset about my lack thereof.

    :hat2:*
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    (Original post by petrus123)
    How could I solve this question? A diagram would be great, but an explanation on its own would be very good as well.

    Thanks!

    EDIT: Sorry, I thought it had been attached successfully. Evidently not :-(!

    It won't attach (I think) - here it is: 'A girl, of mass 40kg, is travelling in a lift holding a parcel by means of a light, inextensible string. The lift is travelling upwards and decelerating at 3ms-2, and the contact force exerted by the girl on the floor of the lift is 294N. Find the mass of the parcel.'
    hold up, let me draw a fab drawing of this
    (Original post by petrus123)
    Sorry, I've edited to add the question. It wouldn't let me attach, and I forgot to check :-(
    I got u :yy:

    (Original post by the bear)
    all rep is good, but i did not want you to be upset about my lack thereof.

    :hat2:*
    Lord Cheesus help you with your asterix problem
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    (Original post by CheeseIsVeg)
    hold up, let me draw a fab drawing of this

    I got u :yy:


    Lord Cheesus help you with your asterix problem
    Thanks
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    Name:  liftgirl.jpg
Views: 44
Size:  506.1 KB
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    Name:  mechanics.png
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    (Original post by petrus123)
    Thanks
    Don't diss I am an amazing artist
    Now what I hope you shall see is the directions of everything and you have been given a few forces and an acceleration.
    Do you see what you may be having to do here?
    the bear fingers crossed I haven't messed up, M1 was a small while ago
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    (Original post by CheeseIsVeg)
    Name:  mechanics.png
Views: 44
Size:  23.9 KB

    Don't diss I am an amazing artist
    Now what I hope you shall see is the directions of everything and you have been given a few forces and an acceleration.
    Do you see what you may be having to do here?
    thebear fingers crossed I haven't messed up, M1 was a small while ago
    that.... is amazing. your girl is so slender :teehee: *
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    (Original post by the bear)
    Name:  liftgirl.jpg
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    My pic is more fab
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    (Original post by the bear)
    Name:  liftgirl.jpg
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    That drawing is amazing! But doesn't the question say, 'the contact force exerted by the girl on the floor of the lift'. That part confused me a bit.
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    (Original post by the bear)
    that.... is amazing. your girl is so slender :teehee: *
    She is slenderman's wife
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    (Original post by CheeseIsVeg)
    Name:  mechanics.png
Views: 44
Size:  23.9 KB

    Don't diss I am an amazing artist
    Now what I hope you shall see is the directions of everything and you have been given a few forces and an acceleration.
    Do you see what you may be having to do here?
    thebear fingers crossed I haven't messed up, M1 was a small while ago
    Thanks for the diagram! What about the tension in the string?
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    (Original post by petrus123)
    Thanks for the diagram! What about the tension in the string?
    the T in the string acts upwards, lol cba to draw lol
    so just formulate an equation, remember (Newton's 2nd law)I believe Monsieur Bear has saved you such trouble
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    (Original post by CheeseIsVeg)
    the T in the string acts upwards, lol cba to draw lol
    so just formulate an equation, remember (Newton's 2nd law)I believe Monsieur Bear has saved you such trouble
    OK, thanks! I'll give it a try.
 
 
 
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