<Tr> <Td> <P> </P> </Td> </Tr> <P> (2) </P> <P> Dividing (1) by (2): </P> <Table> <Tr> <Td> <P> </P> <Dl> <Dd> sin ⁡ θ 1 cos ⁡ θ 1 = F 1 m g ⇒ F 1 = m g tan ⁡ θ 1 (\ displaystyle (\ frac (\ sin \ theta _ (1)) (\ cos \ theta _ (1))) = (\ frac (F_ (1)) (mg)) \ Rightarrow F_ (1) = mg \ tan \ theta _ (1)) </Dd> </Dl> </Td> <Td> <Table> <Tr> <Td> <P> </P> </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> </Tr> <Tr> <Td> <P> </P> </Td> </Tr> </Table> </Td> <Td> <P> (3) </P> </Td> </Tr> </Table>

Coulomb’s law – forces between two point electric charges