Asked by Robin
Three forces act on a moving object. One force has a magnitude of 61.9 N and is directed due north. Another has a magnitude of 52.0 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with a constant velocity? Express your answer as a positive angle south of east.
Answers
Answered by
Scott
constant velocity means no acceleration, which means zero net force
so the third force is equal in magnitude to the resultant of the given forces; but opposite in direction
the magnitude of the resultant of the given forces is __ sqrt(61.9^2 + 52.0^2)
the tangent of the angle of the resultant (north of west) is __ 61.9/52.0
so the third force is equal in magnitude to the resultant of the given forces; but opposite in direction
the magnitude of the resultant of the given forces is __ sqrt(61.9^2 + 52.0^2)
the tangent of the angle of the resultant (north of west) is __ 61.9/52.0
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