A uniform trapdoor of width $1.0\text{ m}$ and mass $15\text{ kg}$ is hinged along one edge. Taking $g = 9.8\text{ N/kg}$, what vertical pulling force must be applied to the opposite edge to hold the trapdoor open at a horizontal angle?

• A$36.75\text{ N}$
• B$73.50\text{ N}$
• C$147.0\text{ N}$
• D$294.0\text{ N}$

Choose an answer — or press 1234