3 people are carrying a uniform metal plate in the shape of an isosceles triangle with base a = 0.7 m and height h = 1.35 m. Thickness of the plate is d = 1.5 cm, the density of the metal is ρ = 6500 kgm3. What is the upwards force that is exerted by the hands of each person, if each of them is holding the plate at a vertex and the plate is horizontal?
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