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6 September, 14:43

a block of wood of mass 10kg and dimension 40cmx25cmx10cm is placed on a table top. find the pressure exerted if the box lies on the tabletop with sides of dimensions; a. 10cmx25cm b. 40cmx10cm

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  1. 6 September, 16:18
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    a.) 392 Pa

    b.) 245 Pa

    Explanation:

    F = m x g

    F = 10 x 9.8 = 98 N

    A₁ = 10cm x 25cm = 250 cm² = 0.25m² for a.) case

    A₂ = 40cm x 10cm = 400 cm² = 0.4m² for b.) case

    Pressure is equal to : P = F / A

    P₁ = 98 / 0.25 = 392 Pa

    P₂ = 98 / 0.4 = 245 Pa
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