How did Henry Cavendish determine the value of g?2 marksSpring tensionTwisted angle balanceMoon's orbitTorsional force
Question
How did Henry Cavendish determine the value of g?
- 2 marks
- Spring tension
- Twisted angle balance
- Moon's orbit
- Torsional force
Solution
Henry Cavendish determined the value of g, the gravitational constant, through an experiment now known as the Cavendish Experiment. Here are the steps he followed:
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Cavendish used a torsion balance, a horizontal bar suspended from a thin wire, with two small lead spheres attached to either end of the bar.
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He then placed two larger lead spheres close to the smaller ones. The gravitational attraction between the small and large spheres would cause the bar to twist, twisting the wire.
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By measuring the angle of the twist and knowing the properties of the wire, Cavendish was able to determine the force of the gravitational attraction between the spheres.
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From this, he could calculate the value of g, the gravitational constant.
Note: The options "Spring tension", "Twisted angle balance", "Moon's orbit" are not directly related to Cavendish's method for determining the value of g.
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How did Henry Cavendish determine the value of g?2 marksSpring tensionTwisted angle balanceMoon's orbitTorsional force
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