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In this lesson, we will learn how to find the resultant of a group of forces acting on a point.
Q1:
The diagram shows three coplanar forces acting at point π. Their magnitudes are 2 N, 2 N, and 8 N in the directions ο«ππ΄, ο«ππ΅, and ο«ππΆ respectively. Given that πβ π΄ππ΅=60β and πβ π΄ππΆ=90β, what is the magnitude of the resultant force? Give your answer to the nearest newton.
Q2:
The forces Fijο§=2+2, Fijο¨=π+9, and Fijο©=9+π act on a particle, where i and j are two perpendicular unit vectors. Given the forcesβ resultant Rij=2β6, determine the values of π and π.
Q3:
Three forces, Fijο§=(β5+10)N, Fijο¨=(πβ5)N, and Fijο©=(β4+π)N act at a point. Their resultant is 6β2 N northwest. Determine the values of π and π.
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