Question

31. Two forces of magnitudes 3 units and 5 units act at 60' with eachother. What is the magnitude of their resultant? ​

Answer 1

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.