Q24 of 43 Page 85

Two forces F1 and F2 are acting on a body. One force is double that of the other force, and the resultant is equal to the greater force. Then the angle between the two forces is?

Given Two forces and

Let resultant force =


Given that: …1


So,


Also, it is given that: …2


Let


Then, from 1: …3


And from 2: …4


Now, is also given by:





Squaring both sides, we get:








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