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Question: The maximum and minimum resultants of two forces are in the ratio 7 : 3. The ratio of the forces is ...

The maximum and minimum resultants of two forces are in the ratio 7 : 3. The ratio of the forces is –

A

(a) 4 : 1

A

(b) 5 : 2

A

(c) \sqrt{7}:\sqrt{3}

A

(d) 49 : 9

Explanation

Solution

(b)

F1+F2F1–F2\frac{F_{1} + F_{2}}{F_{1}–F_{2}} = 73\frac{7}{3} Ž F1F2\frac{F_{1}}{F_{2}} = 104\frac{10}{4} = 52\frac{5}{2}