A 1 m^3 opening in a water reservoir is sealed with a plate having sides of 1 m. The plate hinges around its topside, which is 4m vertically below the surface. The plate is at an angle of 60 degrees to the surface. The plate is opened with a chain, which is attached to the centre of the bottom side and at an angle of 45 degrees to the plate. The plate has a mass of 180 kg. Calculate the force required in the chain to open the plate.
m = 180kg
W = 180kg × 9.8m/s² = 1764N
Horizontal Force required =
Vertical Force required =
F = = 2495 N
Comments
Leave a comment