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Physics B

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A coordinate system (in meters) is constructed on the surface of a pool table, and
three objects are placed on the coordinate system as follows: a 1.5 kg object at the origin,
a 3.4 kg object at (0 m,1.8 m), and a 4.5 kg
object at (4.2 m,0 m).
Find the resultant gravitational force exerted on the object at the origin by the other
two objects. The universal gravitational constant is 6.672 × 10
N · m2
Answer in units of N

  • Physics B - ,

    Use Newton's law of gravity to calculate the two perpendicular forces acting on the object at the origin. Call them Fx and Fy
    The force in the +y direction is
    Fy = G*(1.5)*(3.4)/(1.8)^2
    Write the equation for the other force, Fx, and then add Fx and Fy vectorially.

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