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    Physics Q

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    Ahmed
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    Physics Q

    Post by Ahmed on Sun May 30, 2010 1:02 pm

    Beth, a construction worker, attempts to pull
    a stake out of the ground by pulling on a rope
    that is attached to the stake. The rope makes
    an angle of 51.1◦ with the horizontal.
    If Beth exerts a force of 118.1 N on the
    rope, what is the magnitude of the upward
    component of the force acting on the stake?
    Answer in units of N.


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    Re: Physics Q

    Post by The Banker on Sun May 30, 2010 1:17 pm

    i got 151.75N slanty
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    Re: Physics Q

    Post by Ahmed on Sun May 30, 2010 1:19 pm

    How? I want to check your work


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    Re: Physics Q

    Post by The Banker on Sun May 30, 2010 1:21 pm

    is it right? Razz
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    Re: Physics Q

    Post by Ahmed on Sun May 30, 2010 1:23 pm

    I dont know lol...show me your work


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    Re: Physics Q

    Post by The Banker on Sun May 30, 2010 1:25 pm

    118.1/sin(51.1)
    =151.75
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    Re: Physics Q

    Post by Ahmed on Sun May 30, 2010 1:27 pm

    Why would you do that?? Surprised


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    Re: Physics Q

    Post by The Banker on Sun May 30, 2010 1:32 pm


    sin "theta"= opp/hyp
    u want the opp and u have the hyp (118.1) and theta (51.1)
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    Re: Physics Q

    Post by Ahmed on Sun May 30, 2010 1:39 pm

    Oh...I didn't look at it as a triangle...let's see...I pray that I dont lose points Razz

    EDIT: Yup, Its wrong...and I lost point >.


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    Re: Physics Q

    Post by The Banker on Sun May 30, 2010 1:41 pm

    wait.. so is my answer right?
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    Re: Physics Q

    Post by Ahmed on Sun May 30, 2010 1:41 pm

    No...it's wrong.


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    Re: Physics Q

    Post by The Banker on Sun May 30, 2010 1:42 pm

    hmmm.. this is why i suck at physics Rolling Eyes
    so whats the answer then?
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    Re: Physics Q

    Post by Ahmed on Sun May 30, 2010 1:43 pm

    I don't know...I have to answer it Razz


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    Re: Physics Q

    Post by The Banker on Sun May 30, 2010 1:45 pm

    go on then.. and tell me the answer once u've worked it out.
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    Re: Physics Q

    Post by Ahmed on Sun May 30, 2010 2:02 pm

    Got it:

    (sin51.1)(118.1)=91.91


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    Re: Physics Q

    Post by Dark Flame99966 on Sun Dec 05, 2010 6:19 pm

    ^
    Actually, wavelength times frequency is supposed to equal the speed of light, but I don't see how that has anything to do with this


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    Re: Physics Q

    Post by preid1220 on Sun Dec 05, 2010 7:01 pm

    -Bot be gone-


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