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Q.
Which one of the following is the weakest force ?
AMUAMU 2001
Solution:
The gravitational force of attraction between two objects is given by
$F=\frac{G m_{1} m_{2}}{r^{2}}$
where $G$ the gravitational constant is equal to
$6.67 \times 10^{-11} Nm ^{2} kg ^{-2}$.
Compared to electrostatic, nuclear and electromagnetic, gravitational force is the weakest. Infact gravitational force is $10^{-43}$ times the electrical force.