Question

A large wooden plant with p=471 kg/m³ and dimensions of 20 cm by 35 cm by 10 m is attached to a wall so that the left side of the plank is connected to the wall with a single pin. Using a 2.83 m long steel wire with a diameter of 3 mm, the plank is also attached to the ceiling with the wire, so the wire is oriented vertically from the ceiling to the plank while the plank is oriented horizontally. OFCFOVSS (not sure what this stands for doesn't really matter) is also sitting, stationary atop the plank, precisely 3.1 m from the right end of the level plank.

a. Draw and FULLY label a diagram of the situation

b. Given that the steel wire is attached to the plank 2 m away from the pin and that the plank has uniform density, determine the final length of the wire.

Answer 1