four 7.5 kg spheres are located at the corners of a square of the side 0.80 km. calculate the magnitude and direction of the gravitational force exerted on one sphere by the other three a. 1.18x10^-8 b. 8.80x10^-9 c. 1.47x10^-8 d. 1.12x10^-8 e. none of the above

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.