C: Finding Resultant Forces at an Angle

coolone_888 · Nov 1, 2009

Forces of 67.2lb and 57.3lb are exerted at an angle of 47 degrees. What is their resultant?

Andrew Mason · Nov 1, 2009

coolone_888 said:

Forces of 67.2lb and 57.3lb are exerted at an angle of 47 degrees. What is their resultant?

Show us what you have done first. How do you add these forces?

AM

coolone_888 · Nov 1, 2009

well i know you use c2=a2+b2-2ab cos C. but then I am not sure what to do next.

Andrew Mason · Nov 1, 2009

coolone_888 said:

well i know you use c2=a2+b2-2ab cos C. but then I am not sure what to do next.

Draw a vector diagram. Place one vector along the x axis. The other 47 degrees from the axis with its tail on the head of the first. Draw the resultant. What is the component of the second vector in the y direction? What is its component in the x direction? Add the x components to get the x component of the resultant. What is the y component of the resultant?

AM

C: Finding Resultant Forces at an Angle

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C: Finding Resultant Forces at an Angle

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