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| 1. |
Explain the cavendish experiments for the determinatiin of the universal constant G |
| Answer» Gravitational Constant: Cavendish experiment\tCavendish performed an experiment to calculate the value of G.\tTo calculate the value of G he took a wooden plank and attached two 2 balls on either side of the plank and hung this with a thin thread from the top.\tHe introduced 2 very big balls and those balls are near the smaller balls.\tHe observed that the small balls got attracted to big balls and wooden plank started rotating and as a result the thin thread started twisting.\tThis happened because of force of attraction between the small balls and bigger balls.\tHe observed that :-\tPlank rotates till twisting force becomes equal to the gravitational force between the balls.? = G m1m2/r2LƟ = G m1m2/r2\tBy using the above equation he calculated the value of G,\tG= 6.67x10-11Nm2/kg2 \tUnits of G : Nm2/kg2 | |