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    This is a higher physics question and i have gotten part a correct but i have done something wrong in part b? The answer to part a is 226NName:  image.jpg
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    (Original post by #engineer)
    This is a higher physics question and i have gotten part a correct but i have done something wrong in part b? The answer to part a is 226NName:  image.jpg
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    Can you post what you've got so far?
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    (Original post by Muttley79)
    Can you post what you've got so far?
    Sorry my pen smugged
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    (Original post by #engineer)
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    Sorry my pen smugged
    Try resolving the new force of 140N then you know the friction from part (a).

    Then use F = ma remembering what 'F' in the formula represents.
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    (Original post by Muttley79)
    Try resolving the new force of 140N then you know the friction from part (a).

    Then use F = ma remembering what 'F' in the formula represents.
    Which formula should I use because I used Fx=Fcos(theta)-Ff... And i got it wrong?
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    (Original post by #engineer)
    This is a higher physics question and i have gotten part a correct but i have done something wrong in part b? The answer to part a is 226NName:  image.jpg
Views: 131
Size:  518.7 KB
    Resolve the new forces horizontally and subtract the friction (calculated in a)

    Then use F=ma
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    (Original post by ValerieKR)
    Resolve the new forces horizontally and subtract the friction (calculated in a)

    Then use F=ma
    That gets an acceleration of 1.37 but ghe answer is 0.371
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    (Original post by #engineer)
    That gets an acceleration of 1.37 but ghe answer is 0.371
    Then you've made a mistake somewhere
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    (Original post by #engineer)
    That gets an acceleration of 1.37 but ghe answer is 0.371
    (2*140cos(20degrees)-226)/100 = 0.3711393382
    Check google
    Is your calculator in radians instead of degrees or something?
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    (Original post by ValerieKR)
    Then you've made a mistake somewhere
    Please help me find out what I'm doing wrong
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    (Original post by ValerieKR)
    (2*140cos(20degrees)-226)/100 = 0.3711393382
    Check google
    Is your calculator in radians instead of degrees or something?
    I am such an idiot sorry I was writing 126 instead of 226
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    (Original post by #engineer)
    Attachment 578638578642
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    Please help me find out what I'm doing wrong
    You're subtracting 126 instead of 226
 
 
 
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