In Cavendish Experiment, the faint between balls placed alongside the beam was detectable by the deflection it caused.

repulsion

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attraction

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either A or B

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neither A nor B

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Solution

The correct option is B attraction
Gravitational constant is experimentally determined by the Cavendish experiment. It uses a torsional balance, 2 big spheres, 2 small spheres and a rod. The faint attraction between balls placed alongside the beam is detectable by the deflection it causes. It uses the concept of Force-Torque equilibrium.

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