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    Attachment 612502612504Why does the reaction force increase in part (d) ?
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    (Original post by Uni12345678)
    Why does the reaction force increase in part (d) ?
    You haven't attached the question
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    Urgh it's not working for some reason...
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    Name:  image.jpg
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    (Original post by Uni12345678)
    Urgh it's not working for some reason...
    Try uploading to imgur.com mate then paste the link here
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    I think that worked
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    Also just realised I put physics in the title by accident it's actually M1 but it's physics related oh well
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    (Original post by Uni12345678)
    I think that worked
    Yep it did.
    It increases because initially:
    Reaction + (vertical component of tension) = Weight of car
    which means that
    Reaction = Weight of car - (vertical component of tension)

    but then the tow bar is removed so there is no longer any tension so
    Reaction = Weight of car
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    (Original post by Uni12345678)
    Why does the reaction force increase in part (d) ?
    Before the tow-bar breaks, what additional force is on the car? What is its direction?
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    (Original post by DarkEnergy)
    Yep it did.
    It increases because initially:
    Reaction + (vertical component of tension) = Weight of car
    which means that
    Reaction = Weight of car - (vertical component of tension)

    but then the tow bar is removed so there is no longer any tension so
    Reaction = Weight of car
    Ahh got it thanks
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    (Original post by RogerOxon)
    Before the tow-bar breaks, what additional force is on the car? What is its direction?
    Vertical component of the tension in the tow bar! Thanks for helping I understand it now because when it breaks the force is no longer present acting upwards so the reaction has to increase to equal the weight of the car
 
 
 
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