Two forces of magnitude 8N and 15N respectively act on a point if resultant force is 17N the angle between the forces has to be??
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its 90degree . by applying simple formula
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The equation to use here is the triangular law of vector addition.
F = a²+b²+2abcosθ
Given a = 8 N
b = 15 N
F = 17 N
we need to find the value of θ
if we put all values in the above equation, we get
17²= 8²+15²+2.8.15.cosθ
289= 64+ 225+ 240cosθ
240cosθ= 0
cosθ= 0
θ= 90°
That is the answer.
F = a²+b²+2abcosθ
Given a = 8 N
b = 15 N
F = 17 N
we need to find the value of θ
if we put all values in the above equation, we get
17²= 8²+15²+2.8.15.cosθ
289= 64+ 225+ 240cosθ
240cosθ= 0
cosθ= 0
θ= 90°
That is the answer.
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