A beam with weight $6.0\,\text{N}$ hangs from two strings, $P$ and $Q$. String $P$ is fixed $30\,\text{cm}$ from the left-hand end of the beam, as shown. String $Q$ is not shown. The tension in string $P$ is $2.0\,\text{N}$. Determine the tension in string $Q$ and the point at which it is attached so that the beam remains in equilibrium.
- A$4.0\,\text{N}$ at $10.0\,\text{cm}$ from the left-hand end
- B$4.0\,\text{N}$ at $15.0\,\text{cm}$ from the left-hand end
- C$6.0\,\text{N}$ at $10.0\,\text{cm}$ from the left-hand end
- D$8.0\,\text{N}$ at $7.5\,\text{cm}$ from the left-hand end