31. Two forces of magnitudes 3 units and 5 units act at 60' with eachother. What is the magnitude of their resultant?
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Hey, there!
Here's the answer you are looking for.
(Refer to the attachment)
According to vector addition,
|R| = √[A² + B² + 2ABcosμ] where μ is the angle between A and B.
Here,
R = √[5² + 3² + 2(5)(3)cos60]
= √[25 + 15 + 15] = √49 = 7units.
Thus, magnitude of the resultant is 7 units.
Hope that helps.
Thanks.
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