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    Optimizing Airplane Manoeuvres: Calculating Time for a Circular Arc Turn

    yea but arnt both arc the same size? also why isn't the radius 300?
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    Optimizing Airplane Manoeuvres: Calculating Time for a Circular Arc Turn

    yea but its 1/4 of a circle and isn't 300 the randius because the distace from the runway to the plane is 300
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    Optimizing Airplane Manoeuvres: Calculating Time for a Circular Arc Turn

    c=3.14/2(300) circumfrence = pi divided by 2 multiplied by radius and then i multiplied the circumfrence by 2
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    Optimizing Airplane Manoeuvres: Calculating Time for a Circular Arc Turn

    i seem to be getting the wrong answer... for circumfrence i am getting 471.23m therefor the distance = 942.4m and then to find time i used time=distance/speed and got 5.2s my textbook has different answer. Am i wrong or is there an error in the book?
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    Optimizing Airplane Manoeuvres: Calculating Time for a Circular Arc Turn

    but how would i find the distance in an arc? should i use the equation for circumfrence of a circle? or should i assume it as if it is a straight line? Also after finding the distance of the first arc i can multiply it by two right ?
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    Optimizing Airplane Manoeuvres: Calculating Time for a Circular Arc Turn

    Homework Statement A pilot is flying his personal jet at 180m/s, approaching the airport. Near the airport the pilot sees the runway 300m horizontally to his left, but he is moving parralel to it. He banks left quickly, turning in level, circular arc, until the plane has moved 150 m, then...
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    Yes i understand..ok Thanks a lot u really walked me through this question. Thank u sir Have a good day :)
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    sorry i meant to write 12N..my bad and this would be the force the man would have to use right
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    ahh ok so with the new ones i got the tension for pulley C 24N and Pulley A to be 15N. now would 15N be the force that the man must pull with?
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    ok i got 15N...would this be the force the man would use to pull the box ? Also why did we not use pulley B?
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    yeah but that's the thing for A i am getting the tension to be zero. The equation i have for A is ma=t is this right . Also for pulley C i got 30N
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    ok so i got 2 equations: 1. ma= T 2. ma = 2T - mg would i now add botht these equations together?
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    ok so pulley A will have 2 tensions up and one tension down how would i do pulley C? would it also have 2 tensions pulling up and the mass pulling down?
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    ok so here's what i got for pulley A i have 2 tensions pulling up and one pulling down for B i got on tension pulling up and two pulling down i don't know if that's right and also how would i do C
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    Solve Pulleys & Mass Homework: Lift 60N Box w/ 3 Pulleys

    so draw an FBD for each pulley and then try to find tension? im assuming the tension in pulley A and B will be equal?
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