During one trial of his experiment, Cavendish measured the force of attraction between a 158 kg sphere and a 0.730 kg sphere placed 230 mm apart to be 1.74 x 10-7 N. Calculate the universal gravitational constant based on these values.

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a. During one trial of his experiment, Cavendish measured the force of attraction between
a 158 kg sphere and a 0.730 kg sphere placed 230 mm apart to be 1.74 x 10-7 N.
Calculate the universal gravitational constant based on these values.

b. Describe two potential sources of error in his measurement.

 

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