Question

The maximum and the minimum resultant of 2 forces are in the ration 7:3. what is the ratio of their forces?

Answer 1

Maximum resultant when angle between force is 0 and minimum resultant when angle between forces is 180 let the forces be A And B Applying formula of resultant R = (A2+B2+2ABcosx) substitute x = 0 and 180 to get Maximum resultant = A+B Minimum resultant = A-B A+B/A-B =7/3 3A+3B = 7A-7B 10B = 4A A/B = 10/4 = 5/2