Answer:
The magnitude of Resultant force is F = 7.21-lbs
Explanation:
Two forces acting on an object which are named as F1 and F2.
The angle formed by the forces are 60-degrees
F1 = 6-lbs , F2 = 8-lbs
theeta = 60°
F = √F1²+F2²-2(F1)(F2)cos(theeta)
F = √(6)²+(8)²-2(6)(8)cos(60)
F = √36+64-(96)cos(60)
F = 7.21-lbs
where,
F1 = magnitude of force 1
F2 = magnitude of force 2
theeta = angle formed by forces