C: Finding Resultant Forces at an Angle

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To find the resultant of two forces of 67.2 lb and 57.3 lb at an angle of 47 degrees, start by drawing a vector diagram with one force along the x-axis and the other at the specified angle. Calculate the x and y components of both forces to determine the resultant. Use the cosine law to find the magnitude of the resultant force. Finally, sum the x components and y components separately to obtain the total resultant force. This method provides a clear approach to resolving forces at angles.
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Forces of 67.2lb and 57.3lb are exerted at an angle of 47 degrees. What is their resultant?
 
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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
 
well i know you use c2=a2+b2-2ab cos C. but then I am not sure what to do next.
 
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
 

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