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Maths question

  • Thread starter arsalan_y
  • Start date
  • #1
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Homework Statement


A 2-dimensional force of 5[units] in the direction of the line y = 3x (upwards) acts through the
point P = (−1,−2). Find the moment of the force about the origin

Homework Equations



M = Fd

The Attempt at a Solution


i tried putting x = -1 and y = -2 into the y=3x but it doesnt work and i completely dont know how to do it.
 

Answers and Replies

  • #2
7
0

Homework Statement


A 2-dimensional force of 5[units] in the direction of the line y = 3x (upwards) acts through the
point P = (−1,−2). Find the moment of the force about the origin

Homework Equations



M = Fd

The Attempt at a Solution


i tried putting x = -1 and y = -2 into the y=3x but it doesnt work and i completely dont know how to do it.
i used the quation M= r X F
where OP=r = -i -2j
then i get M = (-i - 2j) X F
i dont know what to do after that to find F
 

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